Introduction to Yangjialing Revolutionary Site: Yangjialing is located 3 kilometers north of Yan'an City. It was the seat of the Central Committee of the Communist Party of China from November 20, 1938 to March 1947. Mao Zedong, Zhou Enlai, Liu Shaoqi, Zhu De and other central leaders lived here successively. There are two famous buildings here, one is the Central Auditorium where the Seventh National Congress was held, and the other is the Central Office Building where the Yan'an Forum on Literature and Art was held.