The historical 206 BC assassination plot against Liu Bang (the Duke of Pei) by Xiang Zhuang during a sword dance at the Hongmen Banquet.

“项庄舞剑，意在沛公”这一典故出自《史记·项羽本纪》。

A figurative expression for an elaborate deception or ruse used to mask one's true malicious intent or hidden agenda.

他表面上是在关心公司的发展，其实是项庄舞剑，意在沛公，想趁机夺权。