Discussion on Urban Epidemic Prevention and Control in Chang 'an City in Tang Dynasty

Chinese cities have a history of at least five thousand years, and the city of Chang'an in the Tang Dynasty is a milestone. The planning and design of Chang'an City represented the most advanced level in the world at that time and laid the foundation for the design of China's capital city. With the global outbreak of the new crown virus COVID-19, it is even more necessary to enter the "post-epidemic era" for urban epidemic prevention and governance measures. In the history of the Tang Dynasty, there were 49 plague outbreaks, but they still created prosperous situations such as the " Excellent Governance during the Zhenguan Times" and " Flourishment Age of Kaiyuan Era". This article analyzes and explores the urban epidemic prevention and governance system of Tang Chang’an City from six aspects, including the site selection, water supply and drainage system, medical isolation facilities, Li-Fang walled ward management system, landscaping, and mainstream medical ideological guidance, and summarizes previous experience. Provide reference for follow-up modern urban epidemic prevention and management.