During the Republic of China, Li Zongwu attracted widespread attention with his book 'Houheixue'. He expounded the view that one should have a thick skin but not a color, and a dark but colorless heart, in order to become a hero. This article will take Liu Bang, Xiang Yu, Cao Cao, Liu Bei, Sun Quan, Sima Yi and other figures as examples to discuss how thickness and blackness affect success or fail...