一级理论和二级理论的区别

Nangong Wangyue saw Lu Feng's unbelievable sword killing more than thirty people in a row. Nangong Wangyue, who was still fanning himself with a folding fan in his hand, put away the fan in his hand, clapped his hands, couldn't help but stood up and said solemnly : Fire sword! It is the fire sword among the seven unique swords of Xuan Tian!...