Li Changhe, Ph.D. of Mechanical engineering, is Professor of Qingdao University of Technology, Doctoral Tutor, Foreign Academician of the Russian Academy of Engineering, Global highly cited scientists (Clarivate), Highly Cited Chinese Researchers (Elsevier), Special Professor of Taishan Scholars in Shandong Province, Outstanding Inventor of Shandong Province, and Outstanding scientific and technological worker in Shandong Province. Prof. Li mainly engaged in grinding and precision machining, nanofluids thermal science, and MQL device technology ranked in the forefront of the world.