護法運動
After the establishment of the Guangzhou Military Government, the north and the south of China were in confrontation. Among the supporters of Guangzhou Government, the militants in Guangxi and Yunnan were superior in strength. Hunan's Tan Yanxi, Zhao Tihuan and Cheng Chieng also supporting the Constitutional Protection Movement. With the support of Lu Rongting and the Guangxi Army, the Constitutional Protection Army defeated Duan Qirui's assault in November. Duan resigned as the North's prime minister as a result, leaving the post to Feng Guozhang. The north and the south were in a temporary armistice.