Introduction to the Sichuan-Shaanxi Revolutionary Memorial Hall: The Sichuan-Shaanxi Revolutionary Base Area was the main force of the Red Fourth Front Army led by Xu Xiangqian in December 1932. It strategically moved from the Hubei, Henan, and Anhui base areas and broke through the siege. Created with the cooperation of the army, centered on Nanjiang, Tongjiang, and Bazhong, it covers 23 county governments and a population of about 6 million. The Fourth Red Army expanded to five armies and more than 80,000 people.