Jun Yan, a professor and doctorate tutor of Dalian University of Technology, once a doctor in the same place.When he was a student in Dalian University of Technology, he learnt from the famous expert of engineering mechanics and optimum structure, academician Gengdong Cheng, and was assigned to do research and teaching work at department of engineering mechanics after that. Now, he is deputy director of the Department of Engineering Mechanics and Deputy Secretary General of the Liaoning Institute of mechanics. He mainly engaged in multi-scale topology optimization research of structured materials, the basic theory and Application Research of multi-functional structural topology optimization, multi-scale analysis and optimization of large and slender ratio marine flexible composite cable structure. Scientific research: He is responsible for 4 National Natural Science Foundations, national key research project, 1 sub project of national high-tech development plan (863) project, 4 enterprises (military) project. He published more than 200 papers on international and domestic academic journals and academic conferences, including 41 SCI journal papers, He was cited more than 490 times in SCI papers. His thesis won the special prize for the outstanding academic papers of Natural Science in Dalian. His research work once aroused the attention of domestic and foreign counterparts and substantive reference and was referenced in a substantial way, They evaluated his work as "important finding". He coauthored 1 independent chapter of an English monograph with Academician Gengdong Cheng. He compiled a planning textbook published by Science Publishing House. He has 4 authorized patents of invention. He was also invited to be the editorial board of IJSMDO, an international magazine. He presided over the parallel session of CJK Symposium on optimum structure. He has been invited to make an invitation report for 10 times. Through close collaboration, the enterprise which cooperates with him has achieved savings of 52 million 840 thousand yuan on umbilical cable products, which realized the breakthrough and demonstration of the core technology of umbilical cable in the underwater system for the first time in China. Teaching: He started working in optimum structure at the Department of engineering mechanics, Dalian University of Technology in July 2007. He teaches "computational structural mechanics", a compulsory course for the Department of engineering mechanics, and "structural topology optimization and material design" for graduate students. In the theory and practice of bilingual teaching, he received the support of the key graduate student teaching reform fund of Dalian University of Technology. He took charge of 2 educational reform subjects of the Dalian University of Technology, profiled a planning testbook of the "12th Five-Year" program published by the Science Press as the chief editor and wrote a number of teaching papers. He participated in a number of national, provincial level quality assessment projects as a backbone. He won the prize of excellent party members of the Dalian University of Technology in 2014.