一级理论和二级理论的区别

He once thought that his biggest gain from entering the Abandoned Land was the unknown iron rod. Now Ning Cheng knew that his biggest gain from entering the Abandoned Land was actually the Baoyang Divine Skill. The magical skill of holding the sun was not used in the abandoned land, but it was used during the tribulation. Not only did he use it, it also became his life-saving trick....