Sun Yat-sen led the Revolution of 1911 and established the Republic of China. However, due to the weakness and compromise of the bourgeoisie, the achievements were stolen by the Beiyang warlord headed by Yuan Shikai and became the great president. Yuan Shikai, a general of the new army in the Qing Dynasty, was highly valued for helping Cixi destroy the Reform Movement of 1898. Beiyang warlords should have evolved from the new army of the Qing government. Later, Yuan Shikai proclaimed himself emperor, and Feng Kun in southern Yunnan (it seems that I can't remember the name a bit. With the support of Sun Yat-sen, I sought Yuan. After Yuan Shikai's death, his men or local warlords ruled with the support of the great powers. At this time, only Guangdong and later Guangxi ostensibly supported Sun Yat-sen to reorganize the Kuomintang after the Allies (Huangpu was established at this time). Later, Chiang Kai-shek carried out the Northern Expedition (the first cooperation between countries) and occupied the south of the Yangtze River, establishing the Nanjing National Government.