土肥原贤二
After General Ma Zhanshan had been driven from Tsitsihar by the Japanese in the Jiangqiao Campaign, he retreated northeast with his depleted forces and set up his headquarters at Hailun, from which he attempted to continue to govern Heilongjiang province. Colonel Kenji Doihara began negotiations with General Ma Zhanshan from his Special Service Office at Harbin, hoping to get him to defect to the new state of Manchukuo. Ma remained in an ambiguous position, continuing negotiations with the Japanese, while he continued to support General Ting Chao.