In fact, after listening to Mei Fu, Li Yao probably understood what was going on.
In fact,
It was Maifu who spontaneously opened the prelude to alchemy.
The alchemy spread in the main world originated from the ancient witchcraft, and they were just like Maifu at the beginning, they were all medicinal herbs. Various medicaments have been developed through research on different herbs and even raw animal organs. Used to achieve various effects.
So,
Li Yao is not very interested in the smart medicine developed.
On the contrary, he is more interested in the "poisons" prepared by Maifu.
...