徐樹錚
Political events then unfolding in China were to fundamentally alter Mongolian history. The Beijing government was controlled by a group of warlords nicknamed the "Anhui clique" headed by Duan Qirui. The government had come under severe public criticism for its failure at the Paris Peace Conference to obtain a just settlement of the Shandong Problem. There was criticism also of Duan's "War-participation army", which ostensibly had been formed for service in Europe in the First World War but in fact was used to maintain Duan's internal control. To divert criticism, he simply rechristened his office the "Bureau of Frontier Defense" and his army the "Frontier Defense Army". In June 1919, Xu Shuzheng, a prominent member of Duan's clique, was named "Northwest Frontier Commissioner", making him the senior Chinese military and civilian officer of Outer Mongolia.