104 years ago today, April 7, 1921 (February 29, 1921, the lunar calendar), the South established a formal government and promoted Sun Yat-sen as the extraordinary president. On April 7, 1921, Sun Yat-sen was elected as extraordinary president by the Southern Congress. Since the reconstruction of the military government in Guangzhou in November 1920, in order to bring the work of the government into line with the rule of law, on April 7, Guangzhou held an extraordinary meeting of the two houses of the National Assembly. 222 members attended the meeting. Lin Sen served as chairman and decided to abolish the military government."Outline of the Organization of the Government of the Republic of China" and elected Sun Yat-sen as the extraordinary president. On the 10th, the extraordinary session of the National Assembly issued a declaration, pointing out the need to establish a formal government, explaining the reason for the election of Sun Yat-sen as the extraordinary president, and urging Sun Yat-sen to take office and establish a formal government. On the 21st, Sun Yat-sen replied with congratulatory messages from members of Congress, saying: "All facilities should be based on the authorization of the people and the trust of the Congress, and should be taken as the criterion to revitalize the spirit of the rule of law and become a strong government."