"Underwater breathing agent?" Han Dong was stunned. In his impression, underwater breathing agent was just a primary medicine. After drinking it, he could breathe underwater for a period of time.

Such a primary potion was recorded in a spiritual power scroll, which was a bit too wasteful.

The real world is not a nightmare world. Spiritual power scrolls are difficult to make. Every recorded spiritual power scrolls are all very rare advanced potion formulas.

Even the formula that cannot be mastered by ordinary methods can be recorded using the spiritual power scroll.

Another situation is that if the alchemist with a low level learns alchem ​​formulas that can be mastered beyond his level, then he will use the spiritual power scroll. This is a method that was thought out for the purpose of not being cut off. After all, even if the alchemist with a low level master of the alchemist with a high level, with his strength, he cannot refine the potion. He can only wait until the alchemist has a higher level in the future and try to refine it.

"Why, I think this recipe was wasted with a spiritual scroll?" Old Hua smiled.

Han Dong was immediately embarrassed and scratched his head and said, "It's indeed a bit."

"Look at this scroll first, it is not the potion you think!" Mr. Hua shook his head and said.

Han Dong took the scroll and did not use it immediately. Instead, he slowly opened it and looked carefully. This scroll was made of wild animal leather, tanned into a thin paper thickness, and the content contained inside was dozens of times that of paper of the same size.

Han Dong only read a small part of the content in the previous one and felt dizzy. The scroll contained too much content and was not the content of a primary medicine formula at all.

"Old Hua, this is not a primary medicine formula!" Han Dong shook his head slightly and raised his head and said.

"Hmph, this is a legendary quality potion formula. How about it? Do you think it's wasted using the spiritual power scroll?" Mr. Hua said angrily.

"What, legendary quality potion?" Han Dong's face looked surprised. Since he became an extraordinary person, he has never even been exposed to intermediate and advanced potion formulas. Now, when he comes into contact with legendary quality formulas, he suddenly feels at a loss.

"Old Hua, this gift is too expensive, I can't accept it!" Han Dong hurriedly pushed.

If it is just a primary medicine or even an intermediate medicine formula, it doesn't matter if Han Dong accepts it, but the legendary quality medicine formula is too expensive. Even if Han Dong gives it to Han Dong for no reason, Han Dong dare not accept it.

"I will not receive any reward without any merits. Mr. Hua, you should take back this recipe." Han Dong's face showed a look of fear and fear.

"Take it, it's an epic potion, but the effect is a bit useless. Strictly speaking, it's equivalent to a high-quality auxiliary potion at most, and its value is not as great as you think." Old Hua smiled.

Seeing that Mr. Hua was so persistent, Han Dong no longer refused. The elder dared not refuse. At worst, he could write down this favor and return it to Mr. Hua sooner or later.

After taking the recipe again, Han Dong read it carefully. This time, he just glanced at it quickly and only looked at the final effect of the potion.

"This is... a potion that can breathe under the water forever?" Han Dong's face showed a look of surprise.

Any potion that can permanently increase attributes is called legendary potion. Even potion that only increases a little physical fitness or a little mental power will be called legendary potion.

This medicine that can make people breathe underwater forever is naturally a well-deserved legendary medicine. It is not what Mr. Hua said at all. It is just equivalent to a high-quality auxiliary medicine, which is as simple as that.

"Old Hua, this..." Han Dong showed a hesitant look on his face.

"Okay, okay, learn quickly. After learning this potion, I will keep it for Lanlan." Old Hua waved his hand and said.

"Old Hua, otherwise, I will be your disciple, or I will hold this medicine formula hot." A bitter smile appeared on Han Dong's face.

"Hahaha, this is what you said, I didn't force you!" Mr. Hua suddenly burst into laughter and pointed at Han Dong and said, "Since you want to be my disciple, then you can kowtow three times. After kowtow, you are the closed disciple of my Hua Guoqiang."

Han Dong's apprenticeship ceremony was a bit simple. He kowtowed three times to Hua Guoqiang on the spot, and gave a cup of tea, and completed the apprenticeship ceremony. He took the potion formula scroll again with both hands. Han Dong used it directly without saying a word.

Countless fine pieces of gold shavings floated out from this spiritual scroll and rushed towards Han Dong's eyebrows. If you enlarge the gold shavings a thousand times, you can see that these golden shavings are all in ancient Xiya words.

In an instant, Han Dong felt a large amount of information flowing into his mind. In addition to the method of refining potions, there were as many as eight alchemy talismans alone.

Once these spiritual talismans enter Han Dong's mind, they automatically evolve and do not need to be constructed by Han Dong at all. This is the power of the spiritual power scroll.

In just one minute, all the golden debris on the scroll poured into Han Dong's mind. With so much information pouring in, Han Dong was also a little dizzy and his whole head was ached.

After the scroll was used, Han Dong did not dare to get up, and his consciousness was immersed in the sea of ​​consciousness, carefully checking the specific operations and requirements of the formula.

"There are eighty-nine kinds of materials alone. Each one requires the technical method of making and refining. The final refining process requires the consumption of more than 15 points of spiritual power and more than 50 points of mental power..."

It took more than an hour to fully understand the recipe information in Han Dong's mind, and a wry smile appeared on his face.

"Teacher, I can't refine this recipe now!" Han Dong handed the spiritual power scroll that only used once in his hand to Mr. Hua, and said helplessly.

"Who asked you to refine it now? When you reach the level of a high-level spiritual master, try to refine it." Old Hua glared and said, "And, even if you want to refine it now, it is just a waste of materials. There are several materials in it, and now they have disappeared. From today on, you can collect it slowly."

Han Dong suddenly realized that this was the case. The reason why Mr. Hua asked him to master this alchemy formula now was that he was going to military academy and would probably rarely meet in the future. On the other hand, he asked him to collect the materials mentioned in the formula.

As for the conditions for a senior spirit master, it is not very difficult for Han Dong. In at most one or two years, Han Dong will be confident that he can improve his strength to the level of a senior spirit master, and every time he improves, he will be perfectly promoted.

"Han Dong, I heard that you were admitted to the First Military Academy in advance?" At this moment, Lin Zhen walked in and greeted Han Dong with a smile.

……
Chapter completed!