On the morning of January 29, 2010, Chang Zheng, a member of the Jilin Province 610 Office led Piao Guinan and Li Chengzhe from the Yanji City Domestic Security Division and other police officers to Ms. Yin Fengqin's home to arrest her. After the officers forced their way into her home, Ms. Yin suddenly plunged from the fifth floor balcony, shattering her skull, fracturing her arms and legs, and forcing her ribs through her skin. Although she was taken to Yanbian Hospital, she had already died.