From the moment she set out, Bai Mengjin had decided to make a trip to Medicine King Valley, and her goal was precisely this medicinal pill. In her past life, Medicine King Valley had constantly researched methods to suppress demonic qi, but Li Yansheng had not been very lucky. Like his master, the Valley Master, he had been alienated from excessive contact with demonic qi, and eventually hunted down and killed by the Immortal Alliance.
After Li Yansheng's death, the Immortal Alliance found several medicinal pills at Medicine King Valley. It turned out he had already made headway in researching this method, but unfortunately ran out of time to use it himself.
The reason Bai Mengjin agreed to his conditions was also partly because of this. If she could help him figure out the principles sooner, perhaps he wouldn't fall to demonic cultivation. And with so many disciples in Medicine King Valley, they could all keep their lives.
Chapter 180