一级理论和二级理论的区别

Xingchen Daojun understood what Xuanhuang Guyan meant and saw Xuanhuang Guyan looking at him. He immediately said, what Brother Gu Yan and Brother Yi Ji said are all facts. I don’t know what the strength of fellow Taoist Ning Cheng is, but I feel that I should not be his opponent in a single fight....