 In December 1931, Zhou replaced Mao Zedong as Secretary of the First Front Army with Xiang Ying, and made himself political commissar of the Red Army, in place of Mao.Liu Bocheng, Lin Biao and Peng Dehuai all criticized Mao's tactics at the October 1932 Ningdu Conference.After moving to Jiangxi, Zhou met Mao for the first time since 1927, and began his long relationship with Mao as his superior.