Chiang Kai-shek's move surprised the Horse Department officials present, when Han Waslengcheng was only a colonel's staff officer in the 64th Division and had no real power. Now Chiang Kai-shek wants Ma Hongkui to promote him to brigade commander, and Ma Hongkui has always regarded the troops as his own private property, so how can he hand over a brigade to an outsider? However, he could not confront Chiang Kai-shek in person, so he had to accept it on the spot. As soon as Chiang Kai-shek left, Ma Hongkui sent Han Liancheng to Nanjing for further study, and at the same time sent his right-hand men to see Dai Kasa, saying that Han Liancheng was a co-spy hidden in the nationalist army.
In 1930, the Central Plains War broke out, and Jiang Feng's main force fought fiercely in the eastern Henan area. Chiang Kai-shek personally commanded the front line and set up the general headquarters in a special train parked in Guide Station. On the night of May 31, a cavalry team under Feng Yuxiang attacked Guide at night, and Chiang Kai-shek's special train could not escape without a locomotive, and was surrounded and beaten by Feng Jun's cavalry, and was in danger. At the critical moment, Han Liancheng, who was stationed in Guide, personally led the main force of the independent regiment to rush to the aid, repelled the Fengbu cavalry, and lifted Chiang Kai-shek's siege.