At about 7: 42 pm on March/0/9, 2009, Han Junliang, a 18-year-old sentry standing guard at the entrance of the barracks of the 17th regiment of Chengdu Military Region in Chongqing, located in Shiqiaopu, Chongqing High-tech Zone, was shot and killed by the murderer, and his automatic rifle was taken away, and another sentry who came to check was seriously injured. The perpetrator escaped afterwards and the police classified the case as a terrorist attack. Special forces searched the city day and night for the perpetrators. After analysis, more than one person committed the crime, and there were accomplices to meet. After the gunman killed the sentry, an accomplice waited in the car for a long time. After the gun grab operation was completed, the waiting accomplices immediately drove the gunman away from the scene. 2012 August 14 At 4: 30 pm, the Ministry of Public Security and Chongqing Municipal People's Government jointly held a press conference in a conference room of Chongqing Public Security Bureau. Huang Wei, deputy director of Chongqing Public Security Bureau, briefed the media on the detection of armed robbery and murder in August 10. It was also confirmed at the press conference that Zhou was also responsible for the shooting of the sentry in Chongqing on March 6, 2009.