Immortal cultivation starts with copying.

Yi Mu's alchemy is indeed a high-level alchemy technique, which can at least allow him to refine elixirs of level five or above.

Of course, the sixth-level elixir will not work, the level of this alchemy is still a little bit low.

The so-called Yimu alchemy is more suitable for refining elixirs of the spiritual medicine type.

If it is used to refine demon pills and other flesh and blood elixirs, it will be far from enough. These are two different matters.

Chen Yunhao carefully read it twice and felt that there was room for improvement.

So first find the spirit of the weapon and let it take a look to see if there is any possibility of improvement.

"It's not too bad. I can refine it for you."

After watching Yishu's alchemy technique, the spirit of the weapon threw it back to him casually with a look of disdain on its face.

The spirit of the weapon closed its eyes, shook its head from side to side, and kept pinching its fingers, as if it was calculating something.

After a full half hour, the spirit of the weapon opened its eyes and reached out to touch Chen Yunhao's forehead.

A new Yi Mu alchemy technique appeared in Chen Yunhao's mind.

The new Yi Mu Alchemy Technique has not changed much, only about 30% of its content has been modified.

With just this one change, as long as Chen Yunhao's cultivation level is improved, he can even refine a sixth-grade pseudo-immortal pill.

This is the most advanced elixir that a sixth-level alchemist in the spiritual world can refine. Going one step further, it would be like refining an immortal elixir.

This is all the changes that can be made at the moment. After all, Chen Yunhao does not have the magic pill technique, and the spirit of the weapon cannot create one for him out of nothing.

"Senior, please also help me improve my weapon refining skills!"

Chen Yunhao smiled shamelessly.

The spirit of the weapon glared at him and took the other jade slip unhappily.

"It's just some rubbish..."

The spirit of the weapon was muttering, but its hands did not stop moving. Basically, as long as Chen Yunhao asked for something, it would usually be satisfied.

This weapon refining technique also has a name, which is recorded in the jade slips, called the Tiangong Bailian Method.

For the Tiangong Bailian Method, there are slightly more changes to the weapon spirits.

The more changes there are, the lower the level is, and vice versa.

Almost 40% of the content of the Tiangong Bailian Method has been changed, so that Chen Yunhao can refine the best spiritual treasure.

However, whether it is a sixth-level elixir or a spiritual treasure, it is related to one's own cultivation.

With his current level of cultivation, he can forget about it. At the very least, he will have to reach the late stage of fusion before he can refine a sixth-level elixir or spiritual treasure.

This is something for later, let’s not mention it for now.

Let’s talk about Chen Yunhao. After obtaining new alchemy and weapon refining techniques, he plunged into the floating island.

Under the rapid rotation of the floating island, the time inside and outside becomes longer and longer. One day in the outside world is ten days on the floating island.

A year passed quickly, and it was already ten years since Chen Yunhao entered the floating island.

Even though he could refine a fourth-level rejuvenation pill before, this thing is considered a low-level item among the fourth level in the spiritual world and is relatively easy to refine.

However, it did lay a certain foundation for Chen Yunhao. However, after switching to the more advanced Yi Mu alchemy technique, it was almost like starting from scratch.

Therefore, it took him nearly half of his time to become proficient in and fully master the new alchemy technique. This shows how poor Chen Yunhao's talent for alchemy is!

He used the remaining half of his time to start refining pills. After arriving in the spirit world, he bought a few pill recipes, most of which were for several common elixirs in the spirit world.

Most of the common elixirs on the market are extremely easy to refine and do not require many spiritual herbs.

In fact, after Chen Yunhao mastered the art of alchemy in the fifth year, it only took him half a year to successfully refine the first batch of new fourth-level elixirs.

However, the success rate of alchemy is relatively low, less than 20%. This is virtual alchemy. If it is used in actual alchemy, it may be only 10%.

Alchemy is generally the same. Except for the different recipes and the required spiritual medicines, the refining techniques are basically the same.

One of the secrets of Yimu alchemy is to have more subtle control over the spiritual fire.

The second is that the mnemonics and hand gestures for alchemy are more complicated, especially the infusion of spirits during the alchemy process.

There are similarities between alchemy and weapon refining, especially when refining fourth-level elixirs and weapons, one of the unavoidable steps is to infuse them with spirit.

Therefore, the core of high-level alchemy and high-level weapon refining is soul-infusing.

For example, taking spiritual weapons as an example, the difference between low-grade, medium-grade and high-grade spiritual weapons lies in the amount of spirituality they contain.

The purpose of Yimu alchemy to endow the spirit is actually to preserve the spirit of plants to the greatest extent possible during the alchemy process.

As the saying goes, all things have spirits, and plants and trees can also turn into spirits.

When I was refining elixirs in the lower realm, I had no idea there were spirits of plants and trees. All I had to do was turn them into spiritual liquid and then condense them into elixirs.

Including the fourth-level elixir of rejuvenation that he had managed to refine at that time, it now seemed to be a weird existence. Without retaining the spirit of plants and trees, the effect was at least 30% to 40% worse.

Therefore, this new alchemy technique consumed a lot of Chen Yunhao's time, especially the soul-infusing part.

The souls of demons are extremely fragile, let alone the spirits of plants and trees.

How to absorb it and then put it into the elixir when it is formed is easier said than done.

In short, this process gave Chen Yunhao a lot of headaches. It was really countless failures, and only after countless failures did he succeed again and again.

How many people would seclude themselves for ten years just to master a technique of alchemy? It's not that there aren't any, but many people probably can't stand the loneliness.

This is different from practicing in seclusion. When practicing, one's mind is wandering away from the world and several years pass in the blink of an eye. They are two completely different concepts.

In the remaining five years, Chen Yunhao increased the success rate of elixirs from less than 20% to 90%. Of course, this only applies to the fourth-level elixir.

And it only targets the few kinds of elixirs that he has skillfully refined.

If there is a new pill recipe, and in actual refining, it is considered very good if the success rate can be maintained at 60% to 70%.

If the one-year deadline had not arrived, Chen Yunhao would probably have studied all the weapon refining techniques in one go.

Chen Yunhao withdrew his spiritual consciousness from the ancient mirror and walked out of the cave.

"Huh……!"

He discovered a communication talisman floating outside the cave's restrictions.

Chen Yunhao doesn’t have any acquaintances in Liuli City, and he went into seclusion after entering the cave. Who sent him the message?

Chen Yunhao picked up the communication talisman and scanned it with his spiritual sense.

It turned out that he was a cultivator who rented another cave not far away. Half a year ago, he called together fellow cultivators from nearby to sit down and share their experiences.

In fact, it was just some private transactions between high-level monks. It was a good thing, but unfortunately Chen Yunhao missed it.

Coming back to Liuli City, Chen Yunhao went to the Foreign Affairs Hall with ease.

Now there is another person in charge of the Foreign Affairs Hall, and it is no longer Deacon Ma.

Chen Yunhao just came to renew the subscription, so it doesn’t matter who is in charge.

He took out another bag of meteorite iron essence, which was exchanged for a hundred spirit crystals, and extended his cave residence for another year.