一级理论和二级理论的区别

Ning Cheng didn't understand what Xuanhuang was tangible and formless. His ability to understand was already incredible, and being washed by the origin of the Xuanhuang Pearl, he could see it even more clearly. In just a short time, Ning Cheng figured out what Xuan Huang was tangible and what Xuan Huang was shapeless. He almost stood up in shock....