Nine in the morning. According to official website, the National Government Affairs Service Center, the working hours of Dazu Citizen Center are: 9: 00 am-12 from Monday to Friday, and 13- 17 in the afternoon, and it is closed on Saturday and Sunday. Dazu District, Chongqing, named after Dazu County, was built in the first year of Gan Yuan, Tang Suzong (758), meaning "Dafeng Dazu", with the year number 1 1253. 20 1 1 Due to the adjustment of some administrative divisions in Chongqing, Shuangqiao District and Dazu County of Chongqing were abolished, and then the administrative area of Dazu District of Chongqing was newly established.