National Northwest Institute of Technology is a temporary university established by National Beiyang University Institute of Technology, Beiping University Institute of Technology, Northeastern University Institute of Technology and private Jiaozuo Institute of Technology in wartime. Beiyang Institute of Technology and Jiaozuo Institute of Technology are two independent schools, and the other two are secondary colleges with independent schools. After the victory of the Anti-Japanese War, the National Northwest Institute of Technology completed its mission, and the participating schools were reorganized, and the Northwest Institute of Technology became an empty shell. 1952, department adjustment, part of resources moved out. Later, East China Aviation Institute (formed by the merger of Jiaotong University, Nanjing University and Zhejiang University in 1952) moved to Xi 'an and changed its name to Xi 'an Aviation Institute. 1957 merged with the rest of Northwestern Polytechnical University to form Northwestern Polytechnical University. Before 2000, the history of Northwestern Polytechnical University began with 1957, and was later pushed forward to 1938. At that time, the Department of Mining and Metallurgy of Northwest Institute of Technology was composed of Beiyang Institute of Technology and Jiaozuo Institute of Technology (among them, teaching instruments, books and equipment were all owned by Jiaozuo Institute of Technology, and all of them were recovered after re-school). However, at the beginning of the establishment of Northwest Institute of Technology, Beiyang clashed with the other three schools, and Li Shutian led Beiyang south into Sichuan, which was stopped by the party and the state. Although some of them returned to Northwest Institute of Technology, Li Shutian established the Xijing Branch of Beiyang University, which meant that Beiyang's strength in Northwest Institute of Technology was weakened at that time. Then Professor Shi Changxu 194 1 was admitted to the Department of Mining and Metallurgy of Liu Guo Northwest Institute of Technology and graduated from 1945. Beiyang Institute of Technology and Jiaozuo Institute of Technology both moved out of repeat schools 1946, and the mining and metallurgy department of Northwest Institute of Technology collapsed after moving out. Therefore, Professor Shi Changxu graduated from the National Northwest Institute of Technology, not the National Beiyang University Institute of Technology, nor the private Jiaozuo Institute of Technology, nor the Northwestern Polytechnical University. Later, the private Jiaozuo Institute of Technology was renamed as the National Jiaozuo Institute of Technology. 1950, its metallurgical department was transferred to Shenyang Institute of Technology (Northeast Institute of Technology), and Jiaozuo Institute of Technology immediately went to Tianjin and changed its name to China Institute of Mining. 1952 With the adjustment of departments, the coal mining group of the Department of Mining and Metallurgy of Beiyang University was placed under China Institute of Mining and Metallurgy, and other departments of the Department of Mining and Metallurgy participated in the establishment of Beijing Institute of Iron and Steel. 1953 zhongnan coal mine industrial school (Pingxiang, Jiangxi) went to Jiaozuo, Henan, and started school at the former site of Jiaozuo institute of technology. 1958 Jiaozuo Mining Institute was established on the basis of Zhongnan Coal Mine Industrial School. 1994 was renamed Jiaozuo Institute of Technology, and in 2004 it was renamed Henan Polytechnic University. After the adjustment of departments, China Institute of Mining and Technology immediately moved to Beijing and changed its name to Beijing Institute of Mining and Technology. After Beijing Institute of Mining and Technology moved to Xuzhou, China University of Mining and Technology Beijing graduate department was established in Beijing (1997 China University of Mining and Technology Beijing Campus was established on the basis of North Research Department of China University of Mining and Technology, and was renamed China University of Mining and Technology (Beijing) in 2009, and 1988 was renamed China University of Mining and Technology). 1960 Beijing institute of iron and steel was renamed Beijing institute of iron and steel, and 1988 was renamed University of Science and Technology Beijing. 1946, Beiyang Institute of Technology, Beiyang Xijing Branch, Taishun Beiyang Institute of Technology and Beiping Department of Beiyang University returned to Tianjin and reopened Beiyang University in Xigu, Tianjin. 195 1 year, Beiyang University merged with Hebei Institute of Technology to form Tianjin University.

To sum up, Henan Polytechnic University is not qualified to recognize Shi Changxu as an alumnus, University of Science and Technology Beijing is far-fetched, and Tianjin University, China University of Mining and Technology and Northwestern Polytechnical University have their own reasons to become Professor Shi Changxu's alma mater.