According to Guo Nianhua, a policeman from the Yucun Police Station of Renqiu City Public Security Bureau, the suspect Jin's daughter is studying at west eight Square Primary School in Renqiu City, and the victim is Yuan Mou, the child's class teacher. On June 23 this year, Yuan found little red dot on Kim's daughter. Suspected to be an infectious disease, advise the child to go home and recuperate, and then come to school after being cured. After learning the situation, Jin thought that Yuan was deliberately making things difficult for his daughter, so he found the school and her theory, and insulted Yuan in public, which was dissuaded by the school teacher.
Afterwards, Yuan's mother came to Jin Qiuping's house to quarrel with her, and there was a conflict between the two sides. Yuan's husband, Jin, stabbed Jin's right arm with a fruit knife and was later identified as a minor injury by forensic doctors. After Kim was injured, Kim fled and hid, and the police pursued it online after filing a case. On August 25, Kim surrendered himself to the Yucun police station, and the police went through the formalities of bail pending trial, and mediated the two sides many times. However, due to the huge difference in compensation amount, the coordination failed.