Sheng Shicai
After Ma evacuated his positions in Gansu, Kuomintang troops from central China flooded the area, and infiltrated Soviet occupied Xinjiang, gradually reclaiming it and forcing Sheng Shicai to break with the Soviets. The Kuomintang ordered Ma Bufang several times to march his troops into Xinjiang to intimidate the pro-Soviet Governor Sheng Shicai. This helped provide protection for Chinese settling in Xinjiang.