1. Cross the rubicon "Historical Records of Xiang Yu": Xiang Yu learned that when he led his troops to cross the river, they all sank, burned their huts, and held three diets to show that all his soldiers would die, and none of them would return to their hearts.
2. Xiang Zhuang's sword dance is intended to be Pei Gong's source "Historical Records of Xiang Yu": Xiang Zhuang's sword dance today is often intended to be Pei Gong's.
3. Embarrassed on all sides is a metaphor of being trapped in a situation of being surrounded by enemies on all sides and being isolated. The source of Records of the Historian Xiang Yu's Biography: Xiang Wang's army fell behind the wall, Serenade ran out of food, and the Han army and the vassal soldiers were surrounded by heavy numbers. At night, I heard that the Han army was besieged on all sides, and Xiang Wang was frightened, saying,' Han has gained Chu, and there are as many Chu people as there are.