A coup of Hongxi (Chinese: 弘晳逆案) was an unsuccessful coup d'etat organised by Hongxi, Prince Li of the First Rank and the eldest surviving son of deposed crown prince Yunreng[1] and other co-conspirators, most of whom were sons of the imperial princes who did not participate in the succession brawl between Yinzhen, Yunzhi, Yunsi and their supporters.