张献忠
After the elimination of Zhang Xianzhong's Xi dynasty, his generals retreated southward to Guizhou province, where they encountered the Southern Ming forces retreating from Guangxi province. The Ming emperor, in urgent need of reinforcements, requested the aid of the Xi dynasty's followers. Zhang Xianzhong's former deputy, Sun Kewang, exterminated all his opponents in the Southern Ming court and kept the Ming emperor under "de facto" imprisonment, all the while continuing to refer to Zhang Xianzhong as a deceased Emperor.