At the end of the movie "The Hongmen Banquet", why did Liu Bang kill all the heroes and military advisers around him? Yafu Fan Zeng finally left Xiang Yu's kit. What did he say?

Father Fan Zeng said that there is a game called lose-lose! He deliberately left a trick for Xiang Yu. In fact, even if Yapu got the trick, he would have reached Liu Bang's hand, so the trick was his deviance, deliberately saying that Sean, Xiao He and others colluded with him to plot! As for Liu Bang killing all the founding heroes, it is the same in any dynasty. It's called: "Birds hide their bows, rabbits die and dogs cook"! How can a general enjoy peace only when he goes to war? ! !