一级理论和二级理论的区别

Lu Feng did not explain, but stared coldly at Old Miao, who had his hands clasped on his head. At this moment, Old Miao's eyes had no trace of humanity at all, and he had completely become a slave of poison, staring at the three of them. , the saliva dripped from his mouth, and the hissing sound sounded from below, which was far more terrifying than sulfuric acid....