叶群
According to the Chinese government, Lin Biao was made aware that Mao no longer trusted him after the 9th Central Committee, and he harbored a strong desire to seize supreme power. In February 1971 Lin and his wife, Ye Qun (who was then a Politburo member), began to plot Mao's assassination. In March 1971, Lin's son, Lin Liguo (who was a senior Air Force officer) held a secret meeting with his closest followers at an Air Force base in Shanghai. At this meeting, Lin Liguo and his subordinates supposedly drafted a plan to organize a coup, titled "Project 571" (in Chinese, "5-7-1" is a homophone for "armed uprising"). Later that March, the group met again to formalize the structure of command following the proposed coup.