General Zhang Xueliang is a great patriot and an eternal hero of the Chinese nation. Patriotism and unity are the most striking features of this general's life. He has made outstanding contributions to promoting national unity and safeguarding national interests. This paper briefly reviews the firm stance taken by General Zhang Xueliang in major events such as changing the flag and changing the flag in Northeast China, fighting for the dominance of Zhongdong Road, mediating the Central Plains War, developing industrial education, and launching the Xi 'an Incident, in memory of this centenarian who just died.