FTP, name this peasant leader who deposed the last emperor of the Ming Dynasty in 1644 by leading a rebellion that paved the way for the Ching.     
This man, who was finally defeated by Wu Sangui at Shanhai Pass, proclaimed the short-lived Shun Dynasty after causing Chongzhen to commit suicide by strangling himself. FTP, name this peasant leader who deposed the last emperor of the Ming Dynasty in 1644 by leading a rebellion that paved the way for the Ching.     
This man, who was finally defeated by Wu Sangui at Shanhai Pass, proclaimed the short-lived Shun Dynasty after causing Chongzhen to commit suicide by strangling himself.
Li Zicheng (or Chuang Wang) 