Gu Zheng has not investigated what Xiong San's body is like, but now he is sure that the black bear in front of him must be Xiong San. Because the inner elixir in Black Bear's brain is pink, it means that the properties of this inner elixir are related to female sex. This is consistent with Xiong San's Tao. Why can Xiong San's Immortal Realm be used twice? In ancient times