Professor and PhD supervisor of Beihang University. Currently, he is the Director of Reliability Center of Weapon Equipment, also Director of National Defense Key Laboratory of Science and Technology on Reliability and Environmental Engineering. He has been engaged, for a long time, in theoretical researches of reliability systems engineering (RSE) and management practice of national major projects. He puts forward the synthesis and integration theory of reliability, and develops the corresponding software platform. The achievement of RES has already been applied to more than 20 key projects and more than 100 units in the top 10 military industrial group. He served as Chief Scientist in 2 national “973” projects, published 140+ high level academic papers and 7 books, authorized more than 40 invention patents, guided 80+ PhD candidates and master students as supervisors. He also won the second prize of National Science and Technology Progress Award 2 times, first prize of Provincial Science and Technology award Progress Award 4 times as the first accomplisher, and the grand prize of National Science and Technology Progress Award 2 times as the team leader.