Project 571
Project 571 (Chinese: 五七一工程; pinyin: Wǔqīyī gōngchéng) was the code name given to an alleged plot to execute a coup d'état against Chairman Mao Zedong in 1971 by the supporters of Lin Biao, then Vice Chairman of the Chinese Communist Party. In Chinese, the numbers "5-7-1" (五七一; wǔqīyī) sound very similar to the term 'armed uprising' (武起义; wǔqǐyì).