The suspect who pleads guilty usually has a repentant attitude and defends himself. However, Li Yunjun, the prosecutor of the Kaifu District Procuratorate in Changsha City, Hunan Province, met an arrogant "confessor". The affectionate and wealthy man I met online was actually a person who had been released after serving his sentence, and the woman's request for divorce was met with violent blows. After the public security organ transferred the case to be examined and prosecuted for suspected intentional injury, the procuratorial organ found that the suspect Guo Mouchun was frivolous when he was being examined, but voluntarily pleaded guilty. After self supplementary investigation, the procuratorial organ prosecuted Guo Mouchun for suspected intentional homicide with sufficient evidence. In the end, Guo Mouchun was punished by the law. Divorce has led to violent beatings. On February 23, 2022, the Kaifu District Public Security Branch of Changsha Public Security Bureau received a report: at the divorce registration office of the government affairs center, Guo Mouchun, who was processing divorce procedures, suddenly hit Ms. Huang, causing her to be injured and fall in a pool of blood. When the police arrived at the scene, the victim Ms. Huang had been taken to the hospital, and Guo Mouchun was sitting on the sofa, with blood stains on the hammer on the ground. After arriving at the case, Guo Mouchun explained the facts. In April 2021, Guo Mouchun, who was released from prison after serving his sentence, met Ms. Huang, a high school teacher, through an online dating platform. The two met for six months and registered for marriage. Shortly after marriage, Ms. Huang learned that Guo Mouchun had been criminally punished for violent crimes and filed for divorce. During the divorce process, Ms. Huang's attitude softened and she suggested calming down with each other, entrusting the divorce matter to her male friend Bi. Guo Mouchun believes that Huang and Bi have an improper sexual relationship and wants to "teach them a lesson". On February 23, 2022, Guo Mouchun brought a solid hammer with him and made an appointment with Ms. Huang and Bi to come to the Civil Affairs Bureau. During this period, due to Ms. Huang's cold attitude, Guo was filled with resentment and, taking advantage of Ms. Huang's unpreparedness, raised a hammer to hit her on the head, face, and other places. After being stopped by the staff, Guo Mouchun regained his composure and put down his hammer, stating that he would not harm anyone. He was then taken away by the public security organs. After investigation, the police found that the facts stated by Guo Mouchun are basically consistent with the case. Due to the fact that Ms. Huang's injury constitutes a minor injury, in March 2022, the public security organs transferred the case to the Kaifu District Procuratorate for examination and prosecution on suspicion of intentional injury. The prosecutor Li Yunjun discovered doubts while conducting the review work. The real intention behind the arrogant confession can be seen from the injury of the victim. Although it is a minor injury, the parts attacked by the suspect Guo Mouchun with the hammer are all concentrated on the victim's head, and because of the strong impact and the key hit parts, the victim has seven fractures and three comminuted fractures, and the hit parts involve many important human organ, such as eyes, nose, and back of the head. According to the attending doctor, Ms. Huang was in a state of shock when she arrived at the hospital, with unstable vital signs. She was arranged to enter the ICU for rescue, and the hospital has issued multiple critical illness notices. The above testimony and injury assessment can prove that Guo Mouchun objectively poses fatal harm to the victim. Li Yunjun further discovered through the examination of the case file that Guo Mouchun's confession seemed complete and could be mutually corroborated with the testimony of the witness, but there was an overlooked detail: why did the victim's attitude suddenly ease after the incident