Gu Lin and others were ordered to launch a false anti-revolutionary campaign against the party, government and military agencies in the Shaanxi-Gansu Soviet Area and interrogate senior officials such as Liu Zhidan and Xi Zhongxun. The situation in the Shaanxi-Gansu Soviet Area was critical.Liu Zhidan, Xi Zhongxun and others were imprisoned. In despair, Liu Zhidan encouraged everyone to believe in the party.In late October 1935, the Shaanxi-Gansu detachment arrived in Wuqi, northern Shaanxi, and promptly stopped the erroneous "anti-revolutionary campaign", and Liu Zhidan, Xi Zhongxun and others were released.In February 1936, Liu Zhidan led the 28th Red Army on the Eastern Expedition.