Elaborating on Operations & Management Sciences for years, Ligang CUI (Leon) has garnered much professional knowledge of this realm. Being well-versed with the solving analytics, CUI shows the great interests in operational problems that are derived from his in-depth insights on numerus practical operations, such as inventory optimization and item replenishment problem. CUI is a jointly educated Ph.D of HUST (Huazhong University of Science & Technology) and CityU (City Univeristy of Hongkong). Currently, CUI's research emphases are on the cost and effect analysis of RFID investment to different systems, the variations of JRP models and corresponding solving methodologies, the battery electrical cars locationing, and AI and BI. Besides CUI's achievements, his most cherished and satisfied thing is the well established relationships with his teachers, classmates, colleagues and his students.