Eight a.m., six p.m. The Postal Savings Bank of China can trace its origins to the postal savings business established in 1919. In March 2007, on the basis of reforming the original postal savings management system, Postal Savings Bank of China Co., Ltd. was officially established. Datong Post Office starts work at 8 a.m. and gets off work at 6 p.m. Datong, a municipality under the jurisdiction of Shanxi Province, is one of the first 24 national historical and cultural cities in China, one of the first 13 larger cities in China, and one of the nine ancient capitals in China. 1. National New Energy Demonstration City and China’s Excellent Tourism City.