chapter 341 Trouble at the door

Katsumi Barlow was quite curious about Shengyuan Dan and asked Geng Can a lot of questions.
After Geng Can's explanation, Katsumi Barlow finally understood.
It's not that Shengyuan Pills cannot be taken at all. If taken together with Yunling Grass, which has a growth period of ten years, the side effects of Shengyuan Pills can be completely offset.
However, this method only works once, and it will only have this effect when you take Shengyuan Dan for the first time.
Katsumi...