Three years later, Yang Chen finally condensed the last spirit rune and entered the mountain peak.

With the entry of the last spirit rune, Yang Chen's body suddenly felt a huge suction, accompanied by Gongsun Ling's exclamation, and he involuntarily entered a certain space.

This is a very huge space, which is like a lattice, divided into countless small spaces, densely packed, at least tens of millions.

Yang Chen understood that this space was the inside of the medicine gourd, because it was filled with a smell of medicinal fragrance that Yang Chen was familiar with, which was very strong.

As long as Yang Chen's mind moved, he could appear in any grid. Yang Chen knew that in each cell, there was a kind of elixir that could be stored. The elixir kept here does not need to use a talisman to block the medicinal properties at all, the medicinal qi will not be emitted, and the medicinal effect will get better and better because of the nourishment of the magic weapon.

Originally, Yang Chen thought that there would definitely be a lot of peerless elixirs in it, but to Yang Chen's disappointment, despite the fragrance of the medicine, Yang Chen did not find any trace of any kind of elixir under the sweep of his divine sense. It seems that the owner of the medicine gourd just kept the gourd and did not leave any elixir.

However, these cells are not empty. There are at least millions of squares in which there is something black and scummy.

With Yang Chen's experience, he could recognize at a glance that these black things were all medicine residue. But Yang Chen still didn't understand what the reason for such a powerful medicine cultivation gourd, which didn't put pills, but put so many medicine residues?

The surprise is always at the end, and in the innermost compartment, there are hundreds of jade slips. When Yang Chen found out for the first time, he couldn't believe his eyes. In the medicine gourd, there are so many jade slips, could it be that there is a peerless pill?

Yang Chen picked up a piece as soon as he could, his divine sense penetrated, and carefully examined the contents. Soon, Yang Chen was a little disappointed, in this jade slip, it was actually only recorded that some ordinary medicinal materials changed under various fire conditions, as well as the changes of some medicinal materials that were mutually restrained.

According to Yang Chen's current level of alchemy, after referring to the Laojun Dan Sutra and the Yun Dan Sutra left by several immortals, these things are just simple things for Yang Chen, these simple medicinal materials, Yang Chen can control the most perfect heat at any time when he holds them in his hand, and there will be no mistakes at all.

However, as Yang Chen picked up more and more jade slips and browsed them, Yang Chen's face began to become more and more cautious and serious.

The content recorded on these jade slips is basically the same, the difference is only the type of medicine. Later, it was a combination of simple pills, but the content was all changes in medicinal materials under various conditions and abnormal conditions, and most of the time, they were records that ended in failure.

But Yang Chen began to pay attention to it, and he was also careful when holding the jade slip, as if those were some peerless treasures.

Yang Chen couldn't help but pay attention to it, and only now did he find out from the things recorded on these jade slips that he seemed to have taken a wrong route on the way to alchemy.

Although there is the Laojun Dan Sutra, the Yun Dan Sutra, the Dan Fang of the Spirit Realm Immortal Realm, plus Yang Chen's own memory of the fire attribute spirit root in his previous life, it can be said that the fire control aspect is extraordinary, all this, counting the strength of the Yun Spirit Furnace, Yang Chen can almost be said to be the most powerful alchemist in the mortal world.

There are many pills that can prove this, whether it is the Heaven Snatching Pill, or the Asking Heart Pill, or the Second Turning Neicha Pill, the Black Tiger Yang Yuan Pill, the Black Tiger Calming Pill, and the Qi Seeking Pill, these can all prove that Yang Chen is definitely a high-level alchemist.

Even Yang Chen himself thought so before. Almost every furnace of pills that Yang Chen refined, there was no failure, all of them were successful, at most, the quality of the pills was different, the number of pills produced was different, and a furnace of pills had never been refined.

But after reading the records on these jade slips, Yang Chen suddenly realized that he was not a high-level alchemist in the strict sense. The reason was that Yang Chen had never refined any furnace of elixir.

It sounds ridiculous for this reason, but Yang Chen himself knows that all of this is because of the memories of Yang Chen's previous life. However, in his previous life, Yang Chen was just a very ordinary alchemist. Perhaps an ordinary alchemist in the Heavenly Court could indeed be a high-level alchemist in the mortal world, but this did not mean that Yang Chen could still have such an advantage after his ascension.

If you change to a pill that Yang Chen has never heard of, and change some medicinal materials that Yang Chen has never come into contact with, even Yang Chen himself can't guarantee whether Yang Chen can maintain such a level.

These detailed jade slips vividly told Yang Chen how a true alchemy master grew up. Each kind of medicinal material, this master has tested it with a variety of different conditions and under different circumstances, what kind of mistakes will be formed, and what kind of consequences will it lead to.

The same is true of the experiments in the Dan formula. What kind of mistakes will occur in the combination of various medicinal materials in different situations, this is the embodiment of the true basic skill of alchemy.

As the saying goes, failure is also an experience, and a smooth sailing situation is bound to not last too long. No one is an exception, and one day there will be setbacks and failures. Being able to learn from failures is the right attitude.

On the way to alchemy, what Yang Chen lacked was precisely failure. Because with the memories of his previous life, Yang Chen didn't know too much about what kind of failures he might encounter on the way to alchemy. Now in the mortal world, Yang Chen can still pretend to be a master, but when he really reaches the spirit realm, when he reaches the immortal realm, Yang Chen will definitely reveal his true form.

What was recorded on these jade slips was the immortal's valuable alchemy experience, and it was also a lot of failed experience. Some even deliberately fail to learn about changes in the potency of the drug in different situations.

As for the dregs in the grid, they are the result of these failures, and every time they are tested, there is a pile of corresponding dregs left. In the medicine gourd, these medicinal residues have also been perfectly preserved, ready for Yang Chen's research.

Now in Yang Chen's eyes, even if the lattice is full of peerless elixir, it is not as precious as this pile of medicinal residue. With these, Yang Chen can make up for his lack of knowledge of medicinal materials to the greatest extent, and let Yang Chen consolidate the foundation that he lacks the most.

Even if someone took thousands of Taishang Laojun's Nine Turns Golden Pill in exchange, Yang Chen would never be willing to exchange these medicinal residues now. It wasn't until this moment that Yang Chen really understood what kind of alchemy cultivation path he should take.