He once held an important position in the Public Security Bureau of Daxing District. In the early days, he worked at the Qingyuan Road Police Station. He was responsible for maintaining public order in the jurisdiction, handling public security cases, minor criminal cases and civil dispute mediation. Later, he was transferred to the serious case squadron of the criminal investigation detachment of the Public Security Bureau of Daxing District, responsible for investigating and handling major criminal cases and juvenile crime cases in the region. With outstanding performance, he has won many honors such as personal third-class merit, outstanding civil servants and personal awards.