叶群
The eyewitness account of Zhang Ning, who was Lin Liguo's fiancée before his death, and another witness who requested anonymity, indicate a sequence of events different from the official narrative. According to Zhang, Lin Biao had become extremely passive and inactive by 1971. When Lin Liguo informed Ye Qun that Mao was preparing to strip Ye of her Politburo seat, the two became convinced their family would be purged if they failed to act, and developed a plan to escape.