Wang Tengjiao: Male, born in June 1973, China nationality, without permanent residency abroad, Ph.D. in computer software and theory in Peking University. Since June 2002, he has been a lecturer, professor and doctoral supervisor in Peking University. From April 20 19 to present, he has served as an independent director of Lida Optoelectronics Co., Ltd.; Since July 20 19, he has been an independent director of the company.