Although the entrance of the cave is extremely narrow, the more you go inside, the more spacious it is. Of course, it's not spacious enough to walk horizontally. It's probably able to accommodate three people in parallel.

After walking for more than ten minutes, he still didn't mean to come to the end. Zhou Heng was an unyielding character. As soon as his temper came, he decided to stick with the cave and had to go to the end!

It's still dark outside, let alone inside the cave. I can't see my fingers. Fortunately, there's no fork in the cave. Even if a road extends forward, I don't have to be afraid that I'll get lost and can't go out.

Zhou Heng occasionally chopped the cave wall with a long sword and looked at the surrounding environment with the faint light of Mars.

Half an hour later, he still didn't get to the bottom of the cave.

To change another person, he had to turn around and go back, but Zhou Heng was stubborn. Since he was determined to go to the end, he would never give up halfway - otherwise, he would not persist for ten years under the test of the black sword!

As long as it's not a maze, it can always come to the end.

Another hour later, a light suddenly appeared in front. Although it was very weak, it was like a light for people who had been in darkness for a long time. Zhou Heng was happy, but his vigilance was even worse. He held the long sword in his right hand tightly.

A few more steps, the light is getting brighter and brighter, showing a hole.

When he stepped out, he suddenly saw a bright moon and few stars. It was a valley.

Zhou Heng looked up at the sky, but he didn't know when the heavy rain stopped. The grass in the valley was covered with stars and water droplets, which was more green and full of vitality.

The valley is not big, it is only a hundred meters around and surrounded by mountains. It is a unique valley. The mountain is steep. I'm afraid it's difficult for spirit apes to climb to the top of the mountain.

There is a small pond under the mountain wall in the West. On the edge of the pond is a big tree. The open canopy completely covers the pond. The leaves gently sway in the night wind and make a rustling sound.

When his eyes swept under the tree, Zhou Heng's eyes couldn't help tightening.

A body!

Sitting on the tree, the head, neck and hands have turned into white bones, and the rest are hidden under a scarlet robe. The thick white bones are not revealed, but a skeleton head is terrible.

Zhou Heng remembered at this time that he had just killed a man not long ago!

What shocked him was that he didn't feel uncomfortable. It seemed that instead of killing a person, he killed a chicken and a dog!

"The road of martial arts is inevitable. It seems that I have adapted in advance!"

"However, I have no intention of being a murderer... My bottom line is, don't annoy me!"

Zhou Heng's eyes were firm, put the killing aside and strode under the tree.

The bones of the body's head and neck were complete. Zhou Heng picked away the body's clothes. He saw three broken ribs at the chest, and the broken bones fell to the ground, glittering and white.

"This person should have been blunt hit, injured his internal organs, and then fled here. He died of his serious injury!"

"This can be proved by the complete clothes on his body. If a sharp weapon pierces, it is impossible not to leave a hole in the clothes! And if his enemy catches up, it is impossible for him to maintain this posture before he dies!"

"Judging from the shape of the bone injury, it was clearly broken by a blow!"

Zhou Heng picked up a broken bone and tried hard, but it was surprisingly tough and motionless. He encouraged the true strength of his whole body and broke it again, but the broken bone is still harder than iron!

"The strength of my hands is definitely more than a kilogram, and this bone has experienced wind and rain for at least decades. It should have lost its previous tenacity. How can it still have such strength?"

"A few years ago, a grave robber dug the grave of an old ancestor who had died for decades. When he was re buried, he was accidentally trampled on the remains and immediately broke them!"

"That old ancestor was the existence of the blood refining realm!"

In contrast, Zhou Heng can only draw a conclusion that shocked him.

The way to heaven!

This corpse was on the way to heaven and achieved an incredible existence!

In Zhou Heng's cognition, the warrior who crossed the road to heaven was equal to the legendary immortal, but such an immortal was blown off his sternum with his fist and finally died tragically here!

Strong has its own strong hand. Even if it crosses the road to heaven, it is not an immortal existence.

Zhou Heng searched the body carefully and found a book and a token near the hip bone.

The book was supposed to be hidden in the man's chest and abdomen and kept close to his body, but with the decay of his body, the book also fell down and appeared at the hip bone.

However, I don't know what material this book is made of. It actually experienced the decay of the body and didn't end with it! Moreover, after such a long time, the book has not changed at all. It feels very soft in your hand. It seems that it is not paper, but human skin.

Never easy!

What kind of information is recorded on pages made of such precious materials? But also from a peerless strong man who may have crossed the road to heaven. How precious would it be to be collected by such a strong man?

There was no handwriting on the cover. Zhou Heng couldn't restrain his curiosity and opened the paper.

"Moon shadow heart formula"!

The first page has only four words, which is written in a flying dragon and Phoenix, with vigorous pen power and an atmosphere.

A formula word can show that this is basically a cultivation skill, but this "moon shadow heart formula" may still be the reason for the strong man's fall, so how important is it?

Zhou Heng couldn't help but continue to read it and read it through.

Yes, this is indeed a cultivation skill. The whole text is only more than 4000 words, which is a little obscure. However, Zhou Heng pauses for a while, and he can suddenly understand it in a few seconds. It's not hard to understand.

His understanding has been continuously enhanced in the process of cultivating Lingtian nine moves. Although he has not mastered the first type of sword technique up to now, it is no difficulty to understand the Yueying heart formula.

"I'd like to try this skill to see how effective it is!"

Zhou Heng sat down with his knees crossed, refined the food in his body with the method of Yueying heart formula, extracted the wandering energy, and then transformed it into his own true yuan force.

"Yes!"

After running the Yueying heart formula in his body for a week, Zhou Heng couldn't help stopping, with a look of shock on his face.

Efficiency!

The efficiency of transforming the moon shadow heart formula into true yuan force is more than twice that of the sun formula!

According to the description of Yueying heart formula, the effect can be increased by 30% if you practice in the moonlight, but the speed of Lianyang formula can also be increased by 20% when you practice in the sun. Anyway, the moon shadow heart formula is much more powerful than the sun formula!

Even if it's only twice the speed, it means to reach the bone refining environment. If it takes ten years to practice with the formula of the burning sun, it only takes five years to use the formula of the moon shadow heart!

No wonder this man was killed!

You should know that time is definitely the biggest enemy on the road of cultivation!

For example, if you can't break through the meat refining state before the age of 20, the possibility will be infinitely reduced and there is basically no hope - so the Zhou family has the rule that you can't practice if you can't reach the meat refining state before the age of 18.

Although the skill only increases the accumulation speed of true yuan force, it can save half of the time, and there will be more time to break through the great realm.

Moreover, the higher the level, the longer it takes to accumulate true yuan power. After reaching the blood refining level, the breakthrough of the small level can be calculated in ten years! If you can reach the top of the twelve levels of body cultivation in 15 years, the more time you can use to impact the road to heaven!

Life is in a hurry. A hundred years will pass. How many decades can be wasted?

Although Zhou Heng can get free energy from the black broken sword, the Yueying heart formula has little effect on him at present, but who knows how long the black sword can last?

Maybe it will be over after returning his ten years of hard work to him!

Moreover, this set of skill can be passed on to Zhou Dinghai.

Zhou Dinghai has wasted many years of cultivation time for him. If you change this moon shadow heart formula, you can reach the twelfth level of cultivation with Zhou Dinghai's talent in five years at most!

Zhou Heng put away his kung fu. His father will definitely return during the new year.

It was about an hour before midnight. At this time, Zhou Heng dug a pit and buried the body. Since he got a best skill from the other party, it was the only thing he could do to make the dead safe.

If you are buried with the dead, there is also the token. One side is written with the word "nine spirits" and the other side is "Su". I don't know what material it is made of. It is purple all over.

Zhou Heng thought it was the identity token of the deceased, so he buried it together.

After all this, it was almost early in the morning. He sat down on his knees and waited quietly for the black broken sword to release energy.

Buzz!

At the moment of midnight, the black broken sword trembled slightly, and huge power poured out, instantly filling Zhou Heng's whole body. He quickly launched the moon shadow formula and absorbed and refined these free energy crazily.

In less than 20 minutes, all the energy had been refined by him. Zhou Heng opened his eyes, but he was suddenly surprised!

On the mountain wall above the pond, a figure appeared impressively, moving constantly!

Someone? Who!

Zhou Heng quickly bounced up, his long sword clanged out of its sheath and put on a defensive state.

He looked up at the sky. Although the moon was high in the sky, the cliff was steep and it was impossible for people to stand on it. Therefore, the figure was definitely not projected from above.

Is it reflected from under the water?

Zhou Heng suddenly had a strange feeling. People swimming under the water are completely different from walking. The figure is definitely walking, not swimming!

Who can walk under the water?

Water ghost?