There have been murders in Laiwu, Jinan in recent 9 years.

1995, a girl named Qin met a man surnamed Liu who already had a family on 20 15, and the two sides maintained normal relations for five years. Later, after Liu's wife knew it, she went to a hospital in Jinan where the girl worked many times, which led to the girl's suspension from school for two months. Later, Qin had the idea of killing Liu's wife, but her plan was known in advance by Liu's wife. Qin was prosecuted for having committed a criminal act and was suspected of intentional homicide.

Defendant Qin Moumou, female, born in June 1995, with technical secondary school education, was a former employee of a hospital in Jinan, and was from Laiwu District, Jinan City. On September 6th, 2020, she was detained by Laiwu Branch of Jinan Public Security Bureau for seven days and fined 200 yuan. On suspicion of intentional homicide, he was detained by Laiwu Branch of Jinan Public Security Bureau on October 28th, 2020, and was placed under residential surveillance on October 5th, 2002165438. With the approval of Laiwu District Procuratorate, Qin was arrested on June 9.