675299。 According to the postal code database of Hengyang City, Hunan Province, the postal code of Yu Alma Mater District of South China University is 675299. Postal code is a scheme to realize the automation of letter sorting. Because computers cannot recognize Chinese, they can recognize numbers. Nanhua University is located in Hengyang City, Hunan Province. The school is jointly established by the Ministry of Industry and Information Technology, the Ministry of Ecology and Environment, the National Health and Wellness Commission, the State Bureau of Science, Technology and Industry for National Defense, China National Nuclear Corporation and the Hunan Provincial People's Government. It is a first-class university in Hunan Province.