In middle age, one's comprehension becomes extraordinary.

The contents of the stone slab were photographed and recorded many years ago, and sent to various places for research.

However, the research did not yield any conclusions.

Xia Zhao's reply was very direct.

The contents of this stone slab have remained inconclusive for many years.

All I know is that these are records left by our predecessors.

It is essentially a record of the events of that brutal battle.

This record is incomprehensible to various researchers, and there is no definitive conclusion.

But why are we able to understand and master the martial arts techniques left by our ancestors?

After a quick thought, Li Yuan guessed what the man was going to do.

They are driven by profit; everything is based solely on self-interest.

The records left by our predecessors are far less valuable than the martial arts techniques they left behind.

Researchers who specialize in these areas would definitely dedicate their time to studying martial arts techniques and skills.

Those are the ones that can really make money.

The inscription on the stone tablet tells the story of that battle many years ago.

The above content is actually not easy to understand. Many of the words left by these pioneers are different from those of today.

Upon careful reading, Li Yuan determined that these texts recorded the final stage of the battle.

That battle was a desperate fight against the beast tide.

The number of ferocious beasts in the wilderness has begun to explode, and food is facing a severe shortage.

These ferocious beasts would then go berserk and turn their gaze toward humans.

That beast tide saw over 300,000 ferocious beasts attacking the southern region alone.

At the time, the response had already prepared for the worst.

Their thought was how to preserve the flame for humanity and prevent its extinction.

Suppressing the beast tide was a pipe dream at the time.

The inscription left on the stone slab was filled with resolute determination.

Those pioneering warriors, having lost all hope, are trapped in this fourth level, waiting to die.

In their vision of the future, humanity may face extinction, completely swallowed up by a horde of beasts.

Therefore, he left all his life's learning here.

Some people were lucky enough to survive, and these things were passed down.

Further down the stone tablet, the contents begin to discuss the martial arts techniques they left behind.

This fourth area used to be their defensive position.

The position contains many traps and defensive structures.

At the time, these facilities were among the most advanced military defense installations.

No wonder one would encounter so many dangers when entering this place to search for martial arts techniques.

Besides being attacked by ferocious beasts, they can also be injured by traps.

Following the clues on the stone tablet, Li Yuan discovered the operating instructions for the defensive weapons left behind by his predecessors.

If the operation cannot be carried out due to the age limit, it can be avoided.

The stone tablet recording the operating methods also marks the locations of various defensive weapons.

Since the ferocious beasts couldn't understand these things, the records made by the predecessors were very straightforward.

No need for riddles; if you can understand it, it must be human.

Following the map markings, Li Yuan began to walk quickly inside.

After bypassing two checkpoints, Li Yuan saw a severed leg...

The wound on the broken leg was covered in blood.

Her legs were covered by a trouser leg, matching what Feng Yingtian was wearing.

If nothing unexpected happens, this should be the leg that Feng Yingtian lost.

He was not injured by the ferocious beast, but by the defensive weapons he had left behind.

It was once used to defend the position against attacks from ferocious beasts.

Now, future generations of humanity are suffering.

It's their own fault; they simply weren't willing to spend the time studying what their predecessors had left behind.

They were only thinking that if they arrived late, the treasures left by their ancestors would be snatched up by others.

It's cold around here, so this severed leg will remain for a longer time—eighteen hours. There's still time.

Li Yuan got up, intending to go and see what he had gained.

After hesitating for a moment, I still stepped forward and picked up the severed limb.

They then quickly walked back to the second-level area.

After searching around, Li Yuan found some logistics personnel and asked them to return the severed limb.

Feng Yingtian's injury is a major event.

Almost all the martial artists in Yanling Town received invitations to search for severed limbs.

Most martial artists dare not enter the fourth level area.

"Bro, you really went to the fourth level?"

The logistics staff were momentarily stunned, instinctively feeling that something was amiss.

But the severed limb in front of me looks like it was only recently cut off.

"Please help me, please send it back to them quickly."

Li Yuan didn't waste any words and simply ordered the logistics team to set off immediately.

The helicopter, which was originally scheduled to leave fully loaded with supplies, took off immediately after picking up the severed limb.

Everyone knows Feng Yingtian's identity; these logistics workers would receive a very good reward just for helping out.

After doing all this, Li Yuan returned to the fourth level area.

The round trip took another five or six hours, so I'll definitely be getting back even later.

But Li Yuan felt there was no problem with this decision.

A person with a broken leg must be filled with unimaginable despair.

The sooner the severed limb is delivered to him, the more at ease he will feel.

At the same time, the success rate of reattaching severed limbs will be much higher.

In theory, if the severed limb is returned within eighteen hours, it can be reattached.

But this is only in theory.

The actual situation varies greatly, as everyone's physical condition is different and the environment in which a severed limb falls is also different.

With all these factors combined, even if it's sent over within 18 hours, it's hard to say whether it will be able to be connected.

After handing over the severed limb, Li Yuan returned again.

Follow the map to avoid various defensive weapons.

After so many years, the switches for turning these weapons on and off have long since malfunctioned.

However, most of them are still in the open state.

To ensure their reliability in actual combat, these defensive weapons were produced to very high standards back then.

As they went deeper and deeper, Li Yuan noticed that the sand on the ground was all yellow.

The sand outside was mostly black.

It is very likely that countless people have perished in that area.

As Li Yuan ventured deeper into the area, he saw no trace of any ferocious beasts.

Half an hour later, what lay before them was a collapsed area.

The collapse covered a large area and seemed to have buried a lot of things underneath.

Li Yuan began searching the surface and found many stone slabs underneath.

On the stone slab was a slightly incomplete set of protective martial arts techniques, "Mountain Protection Qi".

This is a very rare defensive martial art.

A martial artist's cultivation of martial arts involves three aspects: first, realm of understanding; second, movement techniques; and third, martial arts skills to injure the enemy.

Protective martial arts techniques are an extension and enhancement for martial artists.

For most martial artists, there is no energy to learn it, and even if they did, they wouldn't be able to use it.

Human physical strength and energy are limited, and the consumption of movement techniques and martial arts skills to injure enemies is already terrifying.

In this situation, how many people would be capable of using protective martial arts techniques in actual combat?

Li Yuan is acceptable.

The physique developed through cultivating the "Heavenly Gang Body Refinement Technique" far surpasses that of ordinary martial artists.

Others' physical strength and energy are like a lake, but Li Yuan's are like an ocean.

In actual combat, Li Yuan had not yet exhausted his physical and mental strength.

The "Mountain Protection Qi" technique can be fully applied in actual combat.

His body, which was already protected by protective energy, now had an additional layer of protective aura as powerful as a mountain!