Prick the three explosive cloth bags located in the upper, middle and lower parts of the pile respectively, and take out a small amount of powder.

Making fire is now easy for Li Heng. He can randomly select two rocks with a slightly hard texture and quickly rub them with his superhuman strength and speed. The friction surface will soon rise to a temperature of more than two hundred degrees.

Then touch the gunpowder powder with a high-temperature stone surface.

Chi, chi, chi——

"Well, the gunpowder in the three gunpowder bags has not expired. It can be basically concluded that most of the gunpowder here is usable."

It seems that the environment here is indeed very suitable for preserving such flammable and explosive substances, and the earthen gunpowder has not expired after so long.

And this is the premise of everything.

Li Heng previously judged that this method of explosive accumulation would be impossible to blow up the rock wall and form a collapse that could bury the gas cracks. This was because the explosive force of several kilograms of gunpowder was far from enough to shake the rock structure here.
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After all, our ancestors who lived in the Republic of China must have limited knowledge about blasting and explosives, and mistakenly believed that detonating a pile of gunpowder together was the strongest and most powerful way to explode.

However, the reality is just the opposite. A large number of explosives are piled up together. Unless there is a very scientific, accurate and high-speed distributed detonation method, a large number of explosives will be blown away by the gas that exploded first, resulting in a significant reduction in overall power.

In addition, blasting rock formations is not simply determined by the power of explosives, but involves complex structural mechanics and pressure-bearing principles.

Li Heng is not an expert in this field, but with his increasingly powerful brain power, he has read a lot of relevant information and knows some tricks.

He began to disperse the thousands of kilograms of gunpowder piled up, and arranged them according to the relevant knowledge in his mind. He followed the texture of the stone walls and rock formations to find weak points and stress-bearing points.

But this still doesn't work. He needs to break the surface of the rock formation first, dig out a deep pit, and then fill it with explosives to shake and tear the stone wall from the inside.

Generally, this kind of project requires machinery, and an impact drill and electric hammer must be used to break the shell first.

Of course he has no tools in this case.

But, he himself is the best violence machine!

Bang!

Bang!

Bang!

With the help of some leftover iron tools, Li Heng swung his sword and hit the rock wall with thousands of kilograms of force with each blow!

Sparks and gravel burst out like small explosions. Basically, these ancient non-stainless steel tools would be scrapped after only two or three hits in his hands.

It doesn't matter, it's all one-time anyway, and this is their last job.

After the tools were scrapped, Li Heng used a natural hard rock as an "impact hammer". With the force of a thousand catty arm, he pushed the boulder weighing several hundred kilograms like a cannonball, smashing into the fragile stone wall and creating holes and holes.

In this way, Li Heng built a dozen rock pits that could be filled with explosives, and then distributed them one by one to fill the explosive packets. He also disassembled some of the powder packets and used the scattered powder as leads.

The length and distribution of the fuse must also be carefully calculated to ensure that the timing of detonation is basically the same and that the explosive force can reach the maximum in a short period of time. This requires careful calculation of the burning speed of the gunpowder fuse and the stress on different rock layers.

Status.

A large number of calculations and screen simulations were flashing in his mind. While the work at hand did not stop, the complex calculations in his mind were also going on in full swing.

Not only that, the noise behind him was like a pressure cooker boiling. It was getting louder and louder. Even under the imbalance of air pressure, the original gases hidden deep in the ground began to leak into the air here.

Waves of extremely pungent and strong shocks came, and even Li Heng couldn't help but frown and squint.

These gases will damage his eyes. Even with his physique, he feels threatened by these gaseous compounds. You can imagine what it would be like for ordinary creatures once it all pours out and spreads.

"A poisonous dragon turns over and brings disaster to the sky." This saying is no joke. The Qinling Mountains above are no less than washed by volcanic ash.

The breathing sound of the "Poisonous Dragon" behind him became more intense, and the groundwater flowing in was burned by the geothermal heat and turned into steam, which erupted again, rolling up streams of scorching air.

It can be said that the situation has suddenly taken a turn for the worse!

But Li Heng's movements were still steady and steady, and his strong mental power allowed him to remain calm even when Mount Tai collapsed in front of him.

It's just that this change requires him to move faster, otherwise when the airflow completely surges up, the fuses he laid with gunpowder powder are likely to be washed away or ineffective.

Another three quarters of an hour passed, and Li Heng finally stopped. All preparations were completed.

Surveying rock formations, digging and burying points, distributing explosives, and arranging leads... Li Heng is an engineering team by himself!

In just a few hours, an unimaginable amount of work was completed.

But even so, he is still not sure.

Because, it is still too weak, the explosive power of this explosive is still too weak.

Compared to the stability of the entire formation, these several kilograms of explosives are nothing to look at.

But why does Li Heng continue to do this useless work?

After all, he was actually betting on an unlikely possibility.

The rock formation where this underground cavity is located is also formed by the movement of the Qinling crustal plate. It is essentially a fault cliff structure, and this crustal movement continues day after day, year after year, squeezing the formation bit by bit, constantly

It caused the Qinling Mountains to rise and rise.

In this process, the rock layers of the earth's crust themselves also bear huge pressure, which is so great that it changes the properties of the rocks, and some rock layers of the crust accumulate a large amount of crustal kinetic energy like springs.

It is a spring that is in a super-tightened state. What happens when you make a small cut in a rubber band or spring that is stretched to the limit?

Li Heng's bet was that these explosive blasts could tear open such a small hole, triggering a chain of formation pressure releases, and eventually tearing and shattering the entire underground cavity structure.

In fact, this is how most earthquakes occur.

Then after the collapse, the huge amount of earth and stone can directly fill the large crack thousands of meters long under the action of gravity!

After all, these explosives are just fuses, used to detonate another huge energy hidden in the ground.

However, even if it is just this, just a few thousand kilograms of explosives may not be able to tear open that small hole.

Li Heng is not a god, he cannot be considered to that level. He can only say that he will do his best and leave everything to this world.

If the world feels that these creatures from all directions still have a destiny, then they can succeed. If the world is unkind and indifferent, then there is nothing Li Heng can do.

"Are you just letting fate happen again..."

Li Heng lowered his eyes and glanced at his hands, but his face became solemn, showing no joy, no sadness, and no idea what to think.

Cha——

A ray of fire lit up, the fuse began to burn, and the zigzag gunpowder route began to advance a little bit.

Li Heng immediately tried his best to escape to the top of the cliff. He wanted to escape before the fuse burned out.

When we returned to the platform rock above, everything was filled with noise and chaos. The changes below had shocked the entire rat group like boiling porridge.

"Go away!"

Li Heng gave a sharp shout and all the energy in his body was released, shaking away the group of rats that seemed to be rushing up like crazy.

The rats, who had been frightened by the Poisonous Dragon's turning over, had already ignored his characteristics of being soaked in Ksitigarbha essence. However, at this moment, Li Heng was like a divine sword that split waves and split the sea. He rushed through at a speed comparable to that of a train.

All the rats blocking him were shattered in an instant, turning into a mass of flesh and blood.

And his body was covered with scarlet and gray all kinds of broken flesh and bone residues. He walked all the way through the rat's nest to the rocky slope, and passed by the Jizo Jingchi again.

At this moment, his body was covered in stinky blood and was terrifying, like an evil ghost killed from the animal hell.

Plop——

He jumped directly into the Ksitigarbha Essence Pool and washed himself with the pure white lotion to wash away the dirt all over his body.

In this way, this treasure condensed from the essence of the earth after countless years became the bath plate for him to wash his body. The originally pure and white Ksitigarbha essence was now contaminated by blood, becoming unclean and smelly.

But Li Heng didn't care, and after a few seconds of washing, he left without looking back.

His superhuman speed made him fly as if he were touching the ground.

Boom!! Boom!! Boom!!

Violent explosions came, and a series of thunder shook the ground, which could almost pierce a person's eardrum in this semi-enclosed cavity.

It started. The loud noise of the explosion made Li Heng slow down slightly. He couldn't help but look back. He saw flames rising into the sky, thick smoke billowing, and a total of more than ten thunders blooming at the bottom of the cliff. The sound was terrifying and earth-shattering.

After the loud noise passed, the huge sound wave contrast made the entire underground cavity seem peaceful, and it was so silent that it made your head feel empty.

Seeing this situation, Li Heng's heart sank slightly. Could it be that he still couldn't be shaken?

But before he could think about it, the small gravels at his feet suddenly started to shake, and the vibration became stronger and stronger. This clear shaking sensation hit Li Heng's heart along his feet and legs!
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For a moment, Li Heng was so excited that he wanted to laugh.

Then the most important thing to do now is to shut up and run away.

Boom boom boom boom——!!!

The movement this time was much more violent than the dozens of explosions just now. This time it was the effect of the real power of nature being released, a shocking energy that changed the world.

Cracking sounds came from all directions under our feet, like the skin and flesh of the earth tearing apart, like the bones of mountains and rivers shattering, countless falling rocks roaring down, like thousands of thunders rioting underground, trying to overthrow this land.

The earth reshapes this space!

The chain reaction of this collapse was faster than Li Heng expected.

"It's too late to go the way we came!"
To be continued...