9:00 to 17:00. According to the official website of Yancheng Postal Savings Bank, the working hours of Yancheng Binhai Postal Savings Bank are from Monday to Friday: working hours are from 9 am to 17 pm. Generally, some windows are closed from 12 noon to 1 pm, leaving Some staff on duty continue to work. The Postal Savings Bank of China can trace its origins to the postal savings business established in 1919. Large state-owned commercial banks. In March 2007, on the basis of reforming the original postal savings management system, Postal Savings Bank of China Co., Ltd. was established.