Yi Zhong is a pseudonym, used 1969-1970 by Xu Chunzhong (徐纯中) and Chen Yifei (陈逸飞).
Julia F. Andrews, Painters and Politics in the People's Republic of China, 1949-1979 (Berkeley, etc.: University of California Press, 1994), p. 346-347
Our Facebook page
Our posters on Flickr
