Changing the flag in Northeast China refers to Zhang Xueliang's progressive action to get rid of Japanese control and safeguard China's reunification. 1After the Huanggutun incident in June, 928, Zhang Xueliang's national disaster and family feud were tied together. He felt that to avenge and drive away the Japanese aggression, only relying on the northeast corner, the strength was too weak and the effect was not great. So he actively advocated peace between the north and the south and realized national reunification at an early date. Zhang Xueliang's thoughts and activities of changing the flag were opposed, resisted and interfered by Japan, so the flag change was postponed twice. At the end of 1928, Zhang Xueliang ruled out internal and external interference and strengthened his determination to change his name. On February 29th, 65438+, a flag changing ceremony was held in feng tian Government Auditorium. Zhang Xueliang and others took the oath, and Fang Benren, the representative of the National Government, took the oath. Consuls from Europe and the United States were invited to attend. Zhang Xueliang made a speech after taking the oath and issued an instruction to the whole country, saying that he would strive for reunification, practice peace, abide by the Three People's Principles and obey the Nanjing National Government. On the same day, the northern warlords' red, yellow, blue, white and black flags were lowered in all parts of Northeast China, and the Kuomintang flag was raised. This is an adaptation. On February 3rd, 65438+KLOC-0, Nanjing National Government officially appointed Zhang Xueliang as the commander-in-chief of the Northeast Border Guard, and Zhang and Wan Fulin as the deputy commanders. Zhai Wenxuan, Zhang, Chang Yinhuai and Tang Yulin were the chairmen of Fengtian (later changed to Liaoning), Jilin, Heilongjiang and Jehol provinces respectively. Changing the flag in Northeast China is a patriotic act of Zhang Xueliang, which has played a positive role in safeguarding national independence, promoting national unity and cracking down on Japanese aggression.