I will begin by counting their deeds :-
1- Lu Xun convinced Lu Meng to use his illness in order to lower Guan Yunchang guard .
2- He wrote a letter to Yunchang to make him belive that there is no need to gaurd against Wu .
3- When most of the local commanders and the chiefs of the tribal peoples surrendered Lu xun dealed with them very well to gain their hearts.
Lü Meng
1- In 215 He took the three commanderies of Changsha,Guiyang , Lingling, and the first two surrendered but Ling ling was taken by a plot .
2-convinced Sun Quan to give him orders to tak the rest of jing .
3-his SGZ is saying that he faked that he was deathly illness so guan yu was tricked ????
4- he took Yun chang city by surprise trick .
5- Dealed with the city people by the law and even excuted a close man for breaking it
5 (again )- by doing so he tricked Guan troops to come back to the city .
6- captured guan yu by ambushes
7- kill guan yu .
what do you thing and please say a reason or somthing .



