Seeing his demoralized forces melt away and with nowhere to run , Gongshu Duan committed suicide .
Duke Zheng already knew that a revolt was imminent , so he set up a trap ; which both his mother and brother fell into .
Seeing Duke Zheng 's demoralized forces melt away and with nowhere to run , Gongshu Duan committed suicide .
Duke Zheng already knew that a revolt was imminent , so he set up a trap ; which both his mother and brother fell into .