I think the credibility is 80%! Lyu3 bu4, weak in weakness, betrayed his adoptive father Ding Yuan, killed Dong Zhuo and attacked Liu Bei's Xuzhou. The reason for the belligerence is probably caused by him. I said he was not good at fighting for the following reasons: First, why was he captured? The main reason is that he didn't listen to Chen Gong's ambition and stayed in Xuzhou all day (later captured, still so in the next blank). Of course, there are other factors, such as being fooled by Chen Deng's father and son, too young to severely punish his men, which leads to his rebellion, but this is not the main factor! Just because he is not easy to kill, he has no ambition when he finds a comfortable place!