At around 4 a.m. on April 10, Wang Jianjun, a student at the Chuxiong People's Police School in Yunnan Province, swung an iron hammer and a long knife, smashing and hacking Wang Wei and Zhang Tingzhen who stayed in the same dormitory. He committed suicide after the murder. Except for Zhang Tingzhen who luckily escaped, Wang Wei and Wang Jianjun died on the scene. These three students participated in the civil servant examination in August last year and were employed by the Longyang Branch of the Baoshan Public Security Bureau in January this year.