Prof. Guolong Li is a Distinguished Professor of Chongqing University and has gained an excellent reputation in the gear manufacturing for more than 20 years. Prof. Li has been long-term research experience on the precision machining technology and equipment, intelligent manufacturing technology and system etc. For his achievements, he served as chief expert of national key R&D projects and Secretary-General of Chongqing Mechanical Engineering Society. He published more than 100 academic papers, and won 1 second prize of national scientific and technological progress and 2 first prize of provincial and ministerial level, etc.