100 years ago today, on January 15, 1925 (December 21, 1924 in the lunar calendar), the Guangdong Revolutionary Government sent troops to attack Chen Jiongming. Chen Jiongming On January 15, 1925, the Guangdong Revolutionary Government issued a declaration of the Eastern Expedition and sent troops to crusade against the rebel Chen Jiongming. On November 15, Chen Jiongming took the opportunity of Sun Yat-sen to go north to Beijing and proclaimed himself the "Commander-in-Chief of the Guangdong Army". He assembled Lin Hu, Fang Benren and other departments in Chaozhou and Shantou, and divided troops into three routes to attack Guangzhou. On the 15th, the Guangdong Revolutionary Government Army advanced eastward in three routes, attacking Tamsui with the student army of Huangpu Military Academy and the Cantonese army of Xu Chongzhi's Institute as the right route; the Liu Zhenhuan army of the Gui army as the middle route, attacking Huizhou; and the Yunnan army Yang Ximin's army as the left route, attacking the source of the river. The right route army was led by Chiang Kai-shek, the principal of Huangpu Military Academy, and Zhou Enlai, director of the political department of the military academy, was in charge of wartime political work. The right route army was the main force of the Eastern Expedition, with the student army of Huangpu Military Academy as the backbone. The three-way army set off immediately, wanting to kill Chen Jiongming.