1, cross the rubicon "Historical Records of Xiang Yu": When Xiang Yu learned that he was leading his troops to cross the river, he sank, broke the kettle, burned down the house, and gave three meals to show that his soldiers would die.
2, Xiang Zhuang sword dance, which means Pei Gong source "Historical Records of Xiang Yu": Xiang Zhuang sword dance today, its meaning is often Pei Gong also.
3. Being besieged on all sides is a metaphor of being surrounded by enemies and isolated. The historian Xiang Yu's biographical records come from the fact that Wang Xiang's army fell under the city wall, serenaded all his food, and the Han army and vassal soldiers were surrounded by heavy troops. When he heard that the Han army was under siege at night, Wang Xiang was frightened and said, "Han has gained Chu, which is almost as many people as he Chu.