直系
General Cao Kun (; Courtesy name: Zhongshan () (December 12, 1862 – May 15, 1938) was a Chinese warlord and politician, who served the President of the Republic of China from 1923 to 1924, as well as the military leader of the Zhili clique in the Beiyang Army; he also served as a trustee of the Catholic University of Peking.