Ye Qun
From November 1980 to January 1981, the trial of the members belonging to the counter-revolutionary group of Lin Biao and Gang of Four was held in Beijing. In particular, five high-ranking military personnel, including Wu Faxian, appeared before the court, where they testified that Lin Liguo was actively involved in Project 571. It is also still unclear whether Lin Biao himself planned a coup, or whether Lin Liguo and Ye Qun had such plans and did not inform Lin Biao about it.