Xiàng Yǔ
Xiang Yu the Conqueror (232-202 BC), warlord defeated by first Han emperor
Hóng mén Yàn
Feast at Hongmen
(fig.) banquet set up with the aim of murdering a guest
refers to a famous episode in 206 BC when future Han emperor Liu Bang 劉邦|刘邦[Liu2 Bang1] escaped attempted murder by his rival Xiang Yu 項羽|项羽[Xiang4 Yu3]
Liú Xiàng
Liu Xiang (77-6 BC), Han Dynasty scholar and author
Chǔ Hàn Zhàn zhēng
Chu-Han Contention (206-202 BC), power struggle between Liu Bang 劉邦|刘邦[Liu2 Bang1] of Han and Xiang Yu 項羽|项羽[Xiang4 Yu3] of Chu
Xiàng Zhuāng wǔ jiàn , yì zài Pèi gōng
lit. Xiang Zhuang performs the sword dance, but his mind is set on Liu Bang 劉邦|刘邦[Liu2 Bang1] (idiom); refers to 206 BC plot to murder Liu Bang, aka Duke of Pei 沛公[Pei4 gong1] and the future Han emperor, during a sword dance at Feast at Hongmen 鴻門宴|鸿门宴[Hong2 men2 Yan4]
an elaborate deception to hide malicious intent