After the Empire of Japan announced its surrender on 15 August 1945, the Communist forces in Shandong attacked Jimo, which was held by Japan and the puppet Wang Jingwei regime, in order to gain advantage over the Kuomintang forces. Wei participated in the battle on 26 August, when the Communists took over the city after a three-hour battle and annihilated the 34th Brigade of the Wang Jingwei regime.