 The communist forces were able to expand their victory from Tai'an northward and southward, and by June 20, 1948, other cities and towns including Dawenkou (), Qufu (east of Yanzhou), and Zoucheng (south of Yanzhou) had fallen into their hands.Meanwhile, Yanzhou was besieged by the communist 7th Column.By June 25, 1948, the nationalist stronghold outside the town, Four Pass () had fallen into enemy hands.