Tang Ao can quickly find out the reason for the failure of the first two alchemy, but Tang Ao can only find clues to the failure this time. Through these three times of refining, Tang Ao felt that there was still a lack of medicinal materials in Shennong's Dan Fang. However, Tang Ao looked over and over the Shennong's prescription more than ten times, but he still didn't know which medicine was missing.

Since he can't see it for the time being, Tang Ao has simply put aside the Dan prescription of this forging pill. The top priority now is that he should become a six grade alchemist as soon as possible, get the second half of the Dandao of Shennong emperor and let Tang you accept the inheritance of Youlong emperor.

Half a month passed quickly, and Tang Ao spent the half month in alchemy. After the soul power and spiritual power are exhausted, Tang Ao sits around and adjusts his breath. After breathing, Tang Ao continues to refine pills. Tang Ao was originally a master of four grade elixirs. After half a month's hard work and forgetting to eat and sleep, Tang Ao's Alchemy level quickly reached the top of the fourth grade.

After refining all the four pills, Tang Ao nodded with satisfaction. In the jade bottle, there are nine smooth and round pills with the circulation of Dan rhyme. Yiqi pill is one of the four most difficult elixirs to refine. Its function is similar to that of Taiqing xuanjing, which is to speed up the operation speed of spiritual power in the body of a warrior in a short time, so as to enhance the power of martial arts secret arts.

Only Tang Ao knows that the side effects of Taiqing xuanjing are small and almost no, and the side effects of this Qi Dan are great. After taking Yiqi pill, the veins in the martial arts are easy to tear, and within seven days after the effect of Yiqi pill, the martial arts can't use spiritual power or summon life and soul.

In Tang Ao's opinion, this Qi Dan is really too chicken ribs. It is not to say that Yiqi pill has no effect at all. When two evenly matched warriors fight against the enemy, the one who takes Yiqi pill is absolutely dominant. After taking Yiqi pill, the running speed of spiritual power in the body is almost three times faster. Even though Tang Ao has not taken Yiqi pill, the terror of Yiqi pill can still be imagined by Tang Ao.

However, the side effects of Yiqi pill are too serious, which greatly reduces the scope of application of this pill. This pill, unless it is a life and death crisis, or once taken, after the efficacy, it can only let the mermaid meat. In Tang Ao's eyes, Yiqi pill is unbearable, but Tang Ao doesn't know that Yiqi pill is still a very popular pill in xuanhuang mainland.

After refining Yiqi pill, Tang Ao is ready to refine five grade pills. Up to now, Tang Ao has been able to easily refine the four grade pills, and due to the accumulation of countless years of experience of Shennong emperor, Tang Ao accepted the inheritance of Shennong emperor, and it was easy to refine four grade pills. This also shows that Tang Ao is now the top four level elixir.

No matter where they go, they all have a place. In some small families, their status is even higher. But Tang Ao knows that the four grade elixir is not the end, but just the beginning of his journey in the Dan Road. Tang Ao did not go on refining five grade pills, but sat down to sort out the experience of refining pills during this period of time.

In Tang Ao's life, it took only half a month to refine four kinds of elixir from the beginning of alchemy to now. This speed is very amazing. Tang Ao also knew that his speed was too fast, so after he could easily refine the four grades of elixir, Tang Ao stopped to sort out his experience and understanding of Dan Dao.

Three days later, Tang Ao slowly spit out a turbid breath. In these three days, he has absorbed Shennong's inheritance of one to four grade alchemy into his own Dan Dao. After integration, Tang Ao felt that it would be easier for him to refine four grade elixir.

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