97 years ago today, on June 15, 1928 (April 28, 1928 in the lunar calendar), the Nanjing National Government announced the completion of the great cause of reunification. On June 15, 1928, the Nanjing National Government issued the "Declaration of Unification". After the National Revolutionary Army occupied Peiping and Tianjin, the Kuomintang believed that reunification had been completed and decided to draft a declaration to state its domestic and foreign policies. Wu Zhihui, Cai Yuanpei, Yu Youren, Zhu Jiqing, and Ding Weifen were the drafting members of the declaration. On the 15th, the Ministry of Foreign Affairs of the National Government officially issued it. Basic content: Declares that national reunification "has been completed", "the military and political period will come to an end", the future task of the National Government is to realize the Three People's Principles at home, and the warlords of the past era must be eliminated, "fundamentally destroy the organization of the current society, and if the Communist Party, etc., it must not allow its existence"; Willing to seek "rapprochement" with the country externally, and "never contemptuous of the obligations undertaken in accordance with legal procedures" in the past. On the same day, the National Government issued the "Declaration on Amending Unequal Treaties", the main content of which is: "The fundamental purpose of the national revolution advocated by the National Government is to build a new country, to seek the freedom and welfare of the people, and to seek equality and peace in the For more than 80 years, China has been bound by unequal treaties, which are not only contrary to the principle of international mutual respect for sovereignty, but also prohibited by independent countries. Today, when China's reunification is completed, a new covenant is implemented in order to fulfill the purpose of equality and mutual respect for sovereignty. The Nationalist government is convinced that after all international constraints are lifted, China and various friendly countries will provide each other with material and spiritual assistance, which will surely promote the progress of world culture. On June 14, the meeting of the Central Executive Committee of the Kuomintang decided to hold a ceremony to complete the Northern Expedition in front of Sun Yat-sen's coffin, and planned to send Chiang Kai-shek, the commander-in-chief of the National Revolutionary Army, to preside over it. Chiang Kai-shek happily accepted this task and called the Central Committee on the 16th, saying that "we should obey the order to go On the 26th, in accordance with the orders of the Nationalist Government, Chiang Kai-shek, together with the elders Wu Zhihui, Zhang Jingjiang, and others, departed from Nanjing and headed north through Wuhan. On the way, he invited Li Zongren, commander-in-chief of the Fourth Army, and Feng Yuxiang, commander-in-chief of the Second Army, to go to Pingping together, but Feng did not accompany them and left later.