South ring road. According to Baidu map, Datong Hongyi National Defense Education Base is located atNo. 1, South Ring Road, Pingcheng District, Datong City, Shanxi Province, which refers to a free base for organized primary and secondary school students. Datong Hongyi National Defense Education Base provides retired soldiers with an opportunity to understand the national security situation and development process, further enhancing their national pride and patriotic feelings.