Immortal cultivation starts with copying.

Chapter 738 Secret Box

Now Chen Yunhao still needs to practice to replenish the immortal energy in his body.

After completing it, he can use his immortal energy to advance to the great perfection of fusion.

During the fusion period, only 30% to 40% of the immortal energy is needed to advance.

Judging from his experience, if one wants to merge and advance to the Mahayana stage, not only must the immortal energy be restored to its original state, but it must also be strengthened by 30% to 40% on the original basis.

So this time, the commonly used account is not in a hurry to break through. It is necessary to make up for the lost spiritual energy first, and then let it grow stronger.

Chen Yunhao was planning to advance to the Mahayana stage within a hundred years. He would use the first fifty years to more than double his immortal energy, and the next fifty years to advance two levels in one go.

This is his plan, and there is more than a 60% chance that it can be accomplished.

Now that everything is settled, most of his previous running around was for cultivation.

Now everything is ready, all that’s left is practice.

When monks meditate and practice in seclusion, they don't sit still for years or even decades; they need to move around occasionally.

Most cultivators would spend their time studying alchemy, refining equipment and other cultivation arts besides meditating to pass the time.

This time, Chen Yunhao meditated for more than half a month in one breath. He stood up and stretched his hands and feet, preparing to take out the jade slip that recorded the formation from his storage bracelet to study it.

His spiritual sense scanned an object in his storage bracelet that had been put aside for a long time. It was a secret box.

This secret box was also one of his trophies, and he had obtained it many years ago.

At that time, because the secret box was airtight and integrated, and because I had other things to do, I put it aside for the time being.

Chen Yunhao had no shortage of supplies in recent years, and he also had plenty of treasures, so he forgot about this secret box.

When he took the jade slip just now, he accidentally saw the secret box, which piqued his interest, so he took it out again.

Even though his cultivation level has improved a lot now, he still can't see through this secret box.

It looks like it is indeed airtight and integrated, and spiritual consciousness cannot penetrate it.

However, if you shake it gently, you can still feel that it is empty inside, and there is definitely something inside, and you can feel the vibration.

This secret box is neither made of gold nor wood. It feels cool and heavy to the touch, and has a great feel.

The palm-sized secret box felt like it weighed twenty or thirty kilograms. The key point was that there was no spiritual power fluctuation on it, just like an ordinary piece of iron.

Chen Yunhao tried to input spiritual power into it, but it was useless. This was not a spiritual weapon and could not absorb spiritual power.

Chen Yunhao tried to refine it using the treasure refining techniques, trying more than ten or twenty methods, and tried all the treasure refining techniques he was familiar with.

It is also completely useless, which means it is definitely not a treasure, at least not a treasure artificially refined.

In the end, Chen Yunhao used the most traditional method of blood dripping to recognize the master, wasting a drop of blood in vain.

The blood dripped onto the box and slid down directly, giving Chen Yunhao the feeling that it was unmovable.

Of course, he could also destroy it violently, but Chen Yunhao knew very well that if he dared to damage even one corner of this treasure box in the world of immortal cultivation, the whole box would be ruined.

As for the things inside, they will definitely be damaged.

After trying all the methods, Chen Yunhao closed his eyes and carefully explored the secret box with his hands, not leaving out any inch.

If the monks' method can't open it, then use the most traditional method, the mechanical technique commonly used by mortals.

After carefully feeling around two or three times, I found that the entire secret box was as smooth as a mirror, without even a single bulge, let alone a dent.

Even though he couldn't feel anything as strange as a needle tip, Chen Yunhao became more and more frightened the more he touched.

What kind of secret box was made by a skilled craftsman? It stumped even a powerful person in the late stage of fusion like him.

But the more this happened, the more Chen Yunhao wanted to open it.

What's inside is not important now, because he doesn't know what treasure it is.

Now he was completely attracted by the secret box, which was a challenge for him.

In the next few days, Chen Yunhao thought of various solutions.

For example, if it is burned, soaked in water, frozen, etc., the box will not change at all.

This box is resistant to high temperatures, freezing, and water corrosion.

It feels like a tiger trying to eat a hedgehog and not knowing where to start. It really can't be absorbed.

Chen Yunhao also specially made an awl out of hard spiritual materials, preparing to slowly drill a small hole.

Although the box was hard, Chen Yunhao spent a whole day drilling a hole the size of a grain of rice.

When Chen Yunhao was about to stop and rest, in the blink of an eye, the box repaired itself automatically.

When I touched it carefully, the rice-sized hole seemed like an illusion, as if it had never appeared.

In fact, this is no different from violent destruction. If you are not careful, the entire box will be destroyed.

“I really underestimated you…!”

Chen Yunhao frowned. As far as he knew, only treasures at the spiritual treasure level had a certain ability to self-repair.

Even spiritual weapons below the level of spiritual treasures need to be repaired manually once they are damaged.

But Chen Yunhao spent a whole day on it, so this was not an illusion.

However, seeing this, Chen Yunhao felt a little discouraged.

As a cultivator in the late stage of fusion, he thought that he had a high level of knowledge and experience, so when he encountered some problems now, he tried his best to solve them by himself and did not want to rely on outsiders.

But he felt that he had tried every trick in the book and had run out of ideas, and he could not think of a better way no matter how hard he tried.

He could only sigh in his heart that the world of cultivating immortals was truly vast. Even though he had seen all kinds of treasures, there were still countless treasures that he had never seen and never owned.

After a sigh, Chen Yunhao took the secret box, flashed, and entered the ancient mirror space.

You can't do it without asking for help. If it works, it works. If it doesn't, it doesn't.

Chen Yunhao never forces himself. Since he can't open it himself, he won't dwell on it and will just ask the spirit of the weapon for help.

“I can’t open it…!”

In Kaitian Palace, the spirit of the weapon had a smile on his face, with a hint of ridicule!

"I can't open it, it's my lack of skills, please give me some guidance, senior!"

Chen Yunhao was not afraid of the spirit teasing him. As the saying goes, those with thick skin can eat meat, while those with thin skin cannot.

Face is not important, what is important is getting actual benefits.

"Look at the texture on this box...!"

The spirit of the weapon reached out and touched the secret box in Chen Yunhao's hand.

Chen Yunhao looked down and knew that the box had some natural textures, like wood texture and stone texture.

At first, Chen Yunhao thought that this should be the texture of the spiritual material itself, just like the texture on trees, and it did not attract his attention.

Now if you look closely, it seems to be the texture of the material, circles after circles, like the growth rings of a tree.

"Go ahead. Once you understand these textures, the box will open naturally...!"