C564 Spermatogenesis

According to what the Dong Lao Xian'er said to Zhen Jianghe, Witch Child Praying Drum were evil organ, so none of them dared to think about it.

In the Long White Mountain, there was a cave that was naturally formed right below a cliff. They threw the Witch Child Praying Drum there, and they even sealed the entrance with mud and sand, and used some sort of method to set up a formation