I Became a Progenitor Vampire

Li De doesnt know how long he has been asleep, he only knows that after he inscribed the 120 ancient inscriptions on the stone of the plane, the stone of the plane passed him a period of extreme Huge information.

The history of that piece of information spans millions of years.

Even with his tenacious spirit strength, he still couldn’t bear and digest, and he fell into a deep sleep state instantly.

When encountering an irresistible threat, it will fall into a coma and sleep. This is the instinct of creatures.

This piece of information is too large, if he absorbs brace oneself, it will definitely be directly exploded, and even the extraordinary mage can’t handle the impact of this level of information.

So the instinct of the body chose to sleep.

Li De began to absorb the long message after falling asleep.

He saw a stone, a stone that wafted eternally in chaos and nothingness.

Aimless, I dont know the time, the future, and the past.

No one knows how long it took, an unimaginable existence Chaos Void found the stone.

Then the stalwart existence with only a white bone body used divine force to take that stone as the core and the bones of divine life as the foundation to construct an unprecedented plane-the bone-buried plane. .

Because all the components of the entire plane except for the stone are dense bones.

After the Bone Burial Plane was cast, Li De knew the god of the stalwart-the god of bones.

This history is long and long.

After that, he seemed to be watching a fast-moving movie, the bone buried plane was very weak at the beginning of its establishment, only within the range of a thousand blades.

However, with the investment of countless resources from the God of Skeletons, thousands of tens of thousands of corpses were thrown into the plane every day, and the bones of the entire plane began to pile up crazily.

The original thin air began to diffuse thick Death Power after the corpse had decomposed.

After the death power is rich to a certain limit, the existence with unimaginable power used divine force to depict a complicated array of magic on the bone buried plane.

The magical array Li De even just glanced at it and felt that his soul was about to be swallowed.

The magic array took hundreds of years to be engraved.

When the magic array took shape, everything changed.

As long as the life of the weak undead is put into the plane, under the action of the magic array, the rich Death Power will increase the level of the undead crazy, and a batch of High Rank can be cultivated in a short time. Of the undead.

Death Knight, Zombie, Spirit Dragon, Bone Dragon…etc. Thousands of high-level undeads are born on the Bone Burying Plane every day.

Of course, this improvement is not unlimited.

On the contrary, the god of bones everyday all, who cannot predict the level, will bring a large number of corpses into the bone buried plane to cultivate the plane.

Li De can feel the strength of the Plane Stone on the Bone Burying Plane is getting stronger and stronger. After the energy reaches a certain level, the Plane expansion begins involuntarily.

The power of the infinite plane invaded towards Chaos Void, and the bone-buried plane became larger.

Then the bone buried plane entered a longer period of growth.

Millennium, 10,000 years, 100,000 years, million years ……

Until one day, a group of life exuding a bright atmosphere broke into it and has grown to contain the skeleton The burial plane where the god descended.

The war has begun.

The endless high-level undead submerged Angel Legion, and the tactics of the terrifying undead were almost irresistible.

The army of angels was slaughtered.

But at the moment when the undead was about to win, the situation reversed.

The twelve-winged Seraphim used an unimaginable divine technique to annihilate all the undead on the entire plane in a mortal situation.

In the end, the mighty Twelve Wing Seraphim lost the power to break through the space barrier of the buried plane because of the transitional overdraft.

But the Seraphim did not admit defeat, and it took a hundred years to find the plane stone hidden in the core of the earth.

Then…the Seraphim intercepted the power of the Plane Stone, and the incarnation became a wing suspended above the Plane Stone, and the endless light power was invading the plane The stone seems to purify this evil place.

Li De can feel the rays of light on the stone of the plane slowly fading.

Thousands of years, ten thousand years… Countless years have passed, and then he saw a group of undead in cloaks come to the 12 layers bone altar, using some kind of evil The spell found the plane stone not at all hidden by Seraphim.

The next scenes are all his personal experiences.

Until this time, Li De barely absorbed that long and long memory, and learned the origin of the Bone Burying Plane and the stories that happened in this plane.

“What a long time… this inscription is too weird, I can actually see the experience of this plane stone…”

Li De slowly opened his eyes, and the area where they entered the eyes was dim.

The gloomy sky reflected in the pupils, and the black clouds seemed to be pressed down by the mountains, which gave people a huge pressure.

He rubbed his obscure eyes, put his hands under him, and a cold touch came from his hands, and he sat up directly with slight force.

Only then did he see the surrounding environment clearly.

This is a house with 3 blades high, about 10 blades long, and 5 blades wide. It is ventilated and rudimentary. It cannot even be called a house at all, because the house here has no roof, only four walls. .

Whats even more exaggerated is that the surrounding walls are actually built of white bones, and he even saw the huge dead mans head on the opposite wall showing his teeth and his hollow eyes straight. Hook at him.

This is simply a place of horror.

The scene in front of him immediately made Li De sober.

“Im still on the Bone Burial Plane, but I dont know how long it has been since I watched this scene.”

At this time, Stanley, who was guarding the door, suddenly revealed something. Somewhat hard to conceal surprise.

Quickly walked into the bone wall through the doorway.

Looking at Li De Stanley, who was already sitting on the bed, smiled brightly.

“Mian, you finally woke up.”

Finally?

Li De frowned upon hearing this, “How long have I been asleep?”

“Three months, it is now November 3rd… ..”

Three months? November 3?

Li De slightly relaxed, but fortunately only three months, not too exaggerated.

The amount of information on the Plane Stone is too huge. Although it has been accelerated thousands of times like watching a movie, most of the information in this memory is the key point, and many places have been ignored.

But the huge amount of information still took him a lot of time to absorb.

“Has any major event happened in the past few months? What happened to the City of Dawn?”

Stanley respectfully reported, “Under the crown, you don’t need to worry, everything is normal Development.

The only major event is that Harrison has sent troops out to plunder the population.”

Li De frowned.

“Pillaging the population, the orcs shouldn’t retreat yet, are the orcs already plundering food in the direction of Lin City?”

“No, the orcs are still silent. , The lands they occupied were not returned to humans.

However, apart from this, they didnt do much. They seemed to be garrisoning the land they occupied.”

“This years Who made the population plundering plan? If there is no chaos in the area controlled by the orcs, the difficulty of plundering the population will inevitably be greatly increased. What solutions do they have?”

“Under the crown, it is the think tank Suggestions provided.

This year, our main direction of plundering people is Lin City North Area, because the entry of the undead has caused a large number of refugees to become homeless.

The north is still A place of dead silence, at this time there are still hundreds of thousands of refugees in the area near the north.

These refugees are our target this time.”

I heard this Li De Slightly nodded, and did not continue to ask.

He has already made general arrangements for this years population plundering plan. It is estimated that the plundered population will be around 60,000. Whether it is refugees from the border or the north, as long as the population can be plundered safely, he will not care. .

“Grote, where are they?”

“Castro took Grote back to Lin City, he will be back later, the bones are outside Sleeping inside the bone mountain…”

This undead…Li De didn’t know whether to cry or laugh.

“Alright, get ready, let’s go back.”

“Go back?” Stanley was taken aback for a moment, and then a bit of surprise appeared in his eyes.

“Under the crown, you already control this plane?”

Li De slightly smiled, stretched out his hand and waved, the black plane stone suspended in front of him, and then stretched out his hand , _~

The space in front of him was shattered, and a space gap of five blades high and three blades wide appeared in front of Stanley.

The other end of the space gap is a short valley. In the middle of the valley is a big dry tree surrounded by five or six people. The center of the tree has long been rotten and hollow.

Stanley was extremely excited to see this scene, more excited than he mastered the plane.

“Under the crown, this…this…”

Li De laughed heartily.

“No need to think too much, I really have mastered this plane stone.”

“Your glory is enough to make Haoyue eclipse”, Stanley is full of admiration at the moment. Acclaimed, “It is recorded in the Evil Grimoire that although this method is effective, the success rate is less than 5%. Only the most talented powerhouse can truly control the plane…”

Hearing this Li De complexion stiffened, there is only less than 5% success rate? ? ?

Why dont I know? ? You didn’t even say when I started printing the inscription? ?

Seeing Li De’s face change, Stanley’s face was a bit embarrassed.

“Under the crown, this is also the news that after you fell asleep, I went back to read the evil magic and other ancient books to confirm, but the 5% probability may still be high, and 3% seems more accurate. …..”

After speaking, the tone rose instantly, “This shows that you are unique and unmatched. It is the creation god who has given you infinite wisdom and peerless talent. Praise you, great Under the crown.”

I’m using you to praise me?

Li De resisted the urge to beat up the bastard and glared at Stanley.

At the same time, I am also a little scared, mmp, these eliminated things are really not reliable.

The success rate is only 5%, no, 3%!

In the future, such things must be investigated clearly before proceeding.

But despite this, Li De is still in a good mood. Although he was cheated, the final result is still good.

“In the future, you will need to find out about this kind of affairs before you report it to me.”

“Yes, Mianxia…” Stanley was also a little embarrassed, this time Having such a big Oolong is really detrimental to his previous wisdom.

Li De didn’t continue to struggle, got up and walked out of the temporary wall of white bones, the familiar scene of the bone buried plane appeared in front of him again.

Wei Wei sighed with regret.

“It’s a pity, you can’t take away all of such a large plane.”

Stanley was taken aback for a moment, “Can’t you take them all? Under the crown, after mastering the plane Yes…”

Li De waved his hand and interrupted him, “No, that is a normal plane.

Now the bone buried plane passes by After a long period of time, the power of the plane contained in it has lost even 1% of the normal plane.

The space gaps that appear everywhere are visible.”

Pause after speaking After a while, watching Stanley had a headache and said, “This plane seems complete and is on the verge of collapse.

In several decades, even if Twelve Wing Seraphim no longer uses holy light The stone of the purification plane, this plane will also collapse.”

“You mean that although we control this plane, because of the lack of plane power, we only Can control a small part.

The remaining part is bound to collapse because there is not enough plane power to support it?”

Stanleys eyes flashed a little thoughtful.

Li De glanced at Stanley appreciatively. Although this guy occasionally cheated, his IQ was always online.

“Yes, that’s it.”

“Now the power of the plane contained in the plane stone is extremely thin, and it is basically impossible to support such a large plane. .

So we can only take away a small part of it now, and the rest will collapse.”

Although it is very distressed, Li De cant help it. After tens of thousands of years of purification, the Plane Stone has already suffered a serious deficit.

“Under the crown, what shall we do next?”

Li De looked at the dark stone in his hand, shook the head.

“You dont need to do anything, just take away the plane stone.

Those extra areas will naturally be swallowed by Chaos Void, and the rest will be The plane we really master.”

Stanley knew it, “Do we need me to search the plane again? Maybe there are many good things.”

” “No need”, Li De waved his hand, “I accept most of the memories of this plane. The good things in it have been taken away by others.”

My heart aches. In the memory passed to him by the Plane Stone, there was once a Divine Item lost in this World.

Later, the angel attacked and lost everything, and those High Rank weapons were also purified by the holy light.

Only an empty shell is left for him.

“The flower of death?”

“The flower of death is only born in the most evil place. Although the Death Power here is rich, it was filled with the power of holy light before. The flower of death cannot grow in this environment.”

Stanley was nodded after hearing Li Des explanation, and said nothing more.

Li De thought of something and asked.

“Where are the vampires and adventurers?” After he painted the inscription at that moment, he fell asleep directly, and he had no time to deal with other things.

At that time, the Level 16 vampire was still buried in the ground by him. There were many secrets hidden in these vampires.

“Under the crown, you fell asleep at the time, and we have been guarding by your side. Later, when we took out our hands to investigate, they had disappeared…”

“Are those two adventurers doing it?”

“No, it’s another group of adventurers, because their bodies have been sucked up with blood…”

Li De shook his head helplessly. He really did his own death. These vampires could be dug out so deeply, it was okay to dig in such a place.

“Regardless of them, wake up withered bones and we will leave here.

When I take out the stone of the plane, most of this plane will collapse.”

“Yes, under the crown.”

The power of the plane is no longer enough to support the scale of this plane, even if Li De does not take away the plane stone, it will not take long for this The plane will also collapse, so he has no psychological burden.

Stanley smashed a Fireball directly into a mountain bag of bones hundreds of blades away.

hong long long ~

The sky is full of flames.

“Who disturbs the great Lord Withered Bones sleeping?? The fangs of the city of dawn-the dragon of destruction, withered bone, will give you eternal death…Oh, master, it is you ??

hahaha, your rays of light are more shining than the stars in the sky, your stalwart is like the arm of the creation god, praise you, my master~”

Look While wagging his tail frantically in front of him, lowering his head to please him, Li De corner of mouth twitching, glared at the words anger.

“A lot of nonsense.

Go, follow me out, this plane is about to collapse soon.”

The bones were taken aback for a moment and turned to look. all around, a little bit reluctant, “This plane is too suitable for the great dead bones to fall asleep, as long as you give me 500 years, maybe I can become extraordinary…”

500 years. ….. The human empire has been changed several times.

Li De ignored the guy’s nagging, turned over and sat on its back.

Then he took out the plane stone and waved it, oh~

The space was shattered, and a gap that could accommodate dry bones appeared in front of him.

“Go.”

Not much to say. After Stanley left first, Li De once again communicated with the plane stone who had already soul fusion with him.

Then call the power of the plane through the plane stone, and quickly search the entire plane.

But unfortunately, apart from the hundreds of undead around a gap in the space that just appeared, there are no traces of other lives and treasures.

disinclined to pay attention to those undead who seek to die, directly let the dead bones leave the bone buried plane.

The dry bones that got the order slammed the broken wings of the dragon, and then the huge body flew out of this Spiritual God Land of Falling with a huge background and a long history.

As soon as he left the bone buried plane, Li De’s heart was empty, as if he had lost something.

Holding the stone of the plane, he turned his head abruptly, looked towards the buried plane through the gap in space, and suddenly a scream of sadness rose in my heart.

hong long long ~

After the stone of the plane left the plane, the plane lacking the support of the most core strength began an unprecedented disaster.

The world crashed.

All words at this moment can’t describe the shock brought by the picture Li De saw.

ka-cha ~

It looks like glass is broken, densely packed cracks appear in the sky, like spider web magnified countless times, it looks horrible to see.

Blacks mysterious energy flows back into the plane like sea water from the cracks.

Those black energy is very corrosive, and even Death Power was swallowed up.

The entire plane collapsed instantly after the black energy entered.

hong long long.

The sky is tearing apart, and the infinite darkness has swallowed the clouds, like the devil’s sharp claw tearing everything apart. The ground was squeezed and burst, countless bones flew upside down into the sky, it seems that all the rules have lost their meaning at this moment.

The world was cracked, and the bone buried plane fell into destruction in just a few seconds.

The last impression left to Li De is that-countless bones fly upside down in the air, the sky burst like a spider, the space is shattered, and everything is destroyed.

This is the real world annihilation, and all words to describe such disasters are pale and powerless.

But at the moment when the space gap is about to close.

Li De’s pupils suddenly enlarged, because he saw a black sharp claw dropping from the sky with indescribable volume and indescribable power. The sharp edge directly tore the bone buried plane, divided into two .

Drag the bone buried plane completely into Chaos Void.

ka-cha ~

The space gap disappeared.

Li De’s back is a little cold at the moment.

“Which body of life is that giant claw?”

It’s long and can tear half of the plane with one blow…This kind of life I’m afraid that even Twelve Wing Seraphim can’t hold it.

Took a deep breath, Li De slowly calmed his mood. The main plane repelled the powerful and so on characteristics so that he didn’t need to worry about facing that kind of terrifying life.

I looked around a few times. This is the top of the small valley where he originally entered the bone buried plane.

Three months have passed, and nothing seems to have changed.

The surroundings are still silent, the gray mist is permeating, and the sight is no more than a thousand blades away. The gray clouds in the sky make people feel depressed.

The destruction of the plane just now doesn’t seem to have had much impact on this silence.

Moved to the dry bones and let the Bone Dragon land on the ground.

Li De turned his head in front of the valley and glanced at the rotten and dry hollow tree after turning over. After confirming that there was nothing unusual, he picked up the plane stone with a bit of anticipation. I was immersed in it.

The spirit strength spread instantly, and the situation of the entire plane was immediately and clearly noticed.

Most of the original bone burial plane was collapsed, leaving only the flat white bone in the middle.

A huge circle with a diameter of about a thousand blades.

The 12-layer bone altar that was split by Freya’s sword in the middle still stands. It was the altar that was established when the Bone Burial Plane was first established. It was originally used to commemorate the bones. God’s, later specifically used to transform the undead above Legendary level.

And what makes Li De most curious is the edge of the bone buried plane at this time. At this moment, the edge area is wrapped in a thick fog. Through the thick fog, you can see the gray transparent interlayer-the space barrier. .

His spirit strength spread to this moment will be immediately hindered by an invisible force.

When he wants to cross the space barrier, he feels a huge danger in an instant. It seems that as long as he continues this action, he will definitely encounter unimaginable horror.

Chaos Void.

Li De had a feeling in the heart.

Outside is Chaos Void.

It is the habitat of the indescribable chaotic giant beast just now.

I immediately dispelled the thought of death.

The spirit returned to the 12 layers of the Bone Altar. After a round of investigation, although nothing special was found, Li De knows the power of the Bone Altar. As long as the Death Power is strong enough, it can treat ordinary undead Transformed into Legendary.

Of course, impossible now has this ability, which is the characteristic of the Peak state of the bone buried plane.

The spirit strength glanced past and looked towards the ground.

Li De suddenly took a bit of curiosity, and suddenly moved towards the bones and drilled in.

Bones, countless bones.

There is nothing superfluous here except for the deep bones.

Ten blades, 20 blades…When Li De spirit strength detected a hundred blades, the black mist appeared again, and the gray transparent interlayerspace barriers .

Li De shook the head.

Now there is only one hundred blades in the deepest part of the Bone Burial Plane. Compared with the memory he has obtained, the depth of the ten thousand blades when the Bone Burial Plane is the most powerful is almost impossible to mention.

After exploring the underground space along the space barrier for a circle to make sure that there is nothing missing, I returned to the 12 layers white bone altar, looked up at the thick black clouds above, and continued to explore.

50 blades, 100 blades…500 blades, the familiar space barrier appears again.

Li De, a space that can be called a plane tentatively, explored the space and withdrew its spirit strength.

The expression is a little joyful and a little helpless.

What’s helpless is that such a large plane is so badly vacated. This is the same as a two-meter robust man kidney. It loses 99.9% of the area directly, leaving only the pitiful. A tiny bit of scope.

What makes him happy is that although most of the area is lost, this is a complete plane after all, and a plane with unlimited potential.

The Bone Burying Plane can accommodate the arrival of the god of bones at its strongest time. The divine ability of bones, the god of tyranny, sneak attack, and the powerful divine force of the Lord of Dawn, are enough to explain many problems. Up.

The most important thing is that although most of this plane has lost most of its area, the core things are retained.

Evolve and cultivate high-level undead.

Evolution means that as long as he has enough energy, the plane in his hand can still slowly return to the state of pinnacle.

This is not available in many planes.

The potential of most planes has been fixed when they are formed, and no matter how they are cultivated, they will continue to grow.

It is extremely rare that the bone-buried plane can grow. It is so rare that even the Spiritual God should be looked at.

After all, this is the treasure of the god of bones.

Li De obtained the information recorded by the Plane Stone, and naturally knew the position of the Bone Burial Plane in the Divine Eyes of the bones.

Only later in order to ambush the angel Legion led by Twelve Wing Seraphim Freya, did he use the divine technique to transfer to the main plane.

But didn’t expect it turned out to be a tragedy. Freya was too strong and killed all the undead.

Spiritual God cannot descend on the main plane, so even though the god of bones knows that the bone buried plane is missing on the main plane, there is no way to find it.

Afterwards, Freya used her own power to purify the stone of the plane, perfectly removing the imprint of the god of bones left in the plane of bone buried.

So the Bone Burial Plane currently controlled by Li De has nothing to do with the Bone God, this is an evil plane purified by Freya.

Now the Plane Stone of the Bone Burying Plane has been branded into the Spiritual Imprint by him, and part of his soul has also been integrated into the Plane Stone, so now this plane is completely his Of it.

Unless the god of bones is standing in front of him, otherwise it is impossible to find that the plane in his hand is the original Spiritual God Land of Falling.

The second function is to cultivate high-level undead.

The ultimate goal of the god of bones in forging the bone-buried plane with plane stones was to cultivate high-level undead.

This undead deity who is so powerful that it is indescribable has used a powerful divine technique to engrave the Ancient Devil array that cultivates high-level undead in the plane of burial.

From the information obtained by Li De, this Ancient Devil array was engraved on the Plane Stone.

That is to say, no matter how much the plane shrinks, as long as the plane stone is still there, this magic array can work.

And the most powerful feature of this Ancient Devil array is that as long as the undead is put into the plane, the Death Power in the plane will be instilled into the undead body under the action of the devil array. body, help the undead to grow Soul Fire and improve their strength.

The growth rate of the undead is increased by a hundred times, a thousand times.

When the Bone Burial Plane is in the Peak state, a Level 5 skeleton warrior can be trained to become the other skeleton king beyond Ordinary Level in a week.

This was an important source of troops for the King of Bones.

But now it all belongs to him.

This peach is very sweet.

“Now that I belong to me, I will change my name…”

Li De touched his chin, suddenly his eyes lit up, and he thought of the earth A classic game-demonic beast-Frozen Throne.

One of the buildings is the ultimate building of Spirit Race, which can summon the most powerful ultimate unit of the dead-the frost giant dragon.

“I will call you Burial Ground from now on. I am looking forward to the day when the frost giant dragon can be transformed into this plane.

Burial Ground special product frost giant dragon, hahaha, is coming The more it tastes.”

But what surprised Li De was that the system hint sounded today after he named it.

“Ding~The Burial Ground is named successfully.

You have obtained a primordial plane with growthability-Burial Ground (normal).

You Successfully positioned the plane’s special product as the rare life of the dead Spirit Race-frost giant dragon, you can turn on summon after raising your plane level to the (rare) level.”

“Ding, the lowest master plane The level requirement is Level 18. If the level is lower than Level 18, you will not be able to bear the spirit strength required by the plane. If the spirit strength is too low, it will cause various serious negative effects.

Your current level is Level 15. Are you Choose to spend 50,000 points of strength of Faith to increase your level? After the level is increased, you will reach Level 18. If the strength of Faith is not enough, the level increase will fail. The plane is temporarily frozen and will be unblocked after Level 18.”

Mist grass? ! !

Li De was deeply shocked by several abrupt system hints at this time.

This plane has been recognized by the system, and the most important thing is that the frost giant dragon he casually said has been positioned as a special product of the plane. Can he recruit directly? ! !

That’s a frost giant dragon! !

Dragon! !

Although you have to upgrade the plane level to recruit, isn’t this too exaggerated and defying? ?

The smile on Li De’s face couldn’t hide it.

“Ding~Please make a choice within 10 seconds, otherwise it will be regarded as giving up. To protect your safety, Burial Ground will be frozen.”

Li De returned to his mind in an instant, and focused his attention on the second promotion, raising the level.

He was originally at Level 15, but he has unconsciously praised the experience of rising to Level 16 in a few months of sleep. Now he only needs to click on the upgrade to upgrade to Level 16.

I thought it was a surprise, but now didnt expect that there is a good thing that can be directly promoted.

Level 18, now he has the two most powerful battle strengths in his hand, both Dry Bones and Karp are only Level 18.

Now he is about to step into this level.

But 50,000 strength of Faith still makes him a little bit painful.

I glanced at the strength of Faith in the early 60s on the attribute panel and immediately relaxed, and the development of Dawn Sect has not at all stagnated in the past few months.

He now has more than 40,000 believers, and can provide him with nearly 20,000 strength of Faith every month.

“Confirm the promotion.”

Don’t hesitate, just choose to confirm.

At the moment of selection, Li De immediately felt the strength of Faith contained within the body disappear quickly.

Strength of Faith condensed in his heart like a hundred rivers into the sea. After a while, like a goddess, the strength of Faith began to surge along the bloodline within the body.

Under the guidance of certain rules, the abundant strength of Faith began to build his skeleton, blood, muscles, and even developed the potential of his bloodline.

Li De is devouring the surrounding magic like a black hole, because the swallowing speed is too fast and even set off a magic storm around.

The magic power a few kilometers away was swallowed by him, and a wave of magic power was blown up.

Stanley and Dry Bones watched this scene and immediately guarded them vigilantly.

The soaring wings showed a bit of grievance in the withered eyes of in the sky. Although he absorbed a lot of Death Power while sleeping in Spiritual God Land of Falling, it was still difficult to upgrade in a short time.

He personally saw how Li De was leveled up. It took more than a year to go from Level 13 to Level 15…

Look at this now The imposing manner obviously has a new level of improvement.

Thinking that this bone is full of envy, I also want to upgrade…

Maybe the strengt