一级理论和二级理论的区别

Ruolan. Ning Cheng shouted again, he was already in the life and death realm, and in terms of strength, he was not afraid even of the powerful ones in the eternity realm. But now that he saw Ruolan, he felt that every step he took was extremely important. It was a heavy burden of worry to the deepest level, and then the dislocation of surprise after suddenly seeing it....