Mr. YANG Changchun is a researcher of the Institute of Geology and Geophysics, Chinese Academy of Sciences (“CAS”) and a Ph. D. professor. He holds a doctor degree majoring in applied geology from the First University of Bordeaux in France and a bachelor degree majoring in geophysical exploration from East China Petroleum Institute. Mr. Yang had won the second prize of National Scientific and Technological Progress Award, the first prize of Young Scientist Award conferred by CAS, the first prize of Scientific and Technological Progress Award conferred by CAS. He had been awarded with the honorary titles of “National Outstanding Returned Talents after Studying Abroad” and “Fighter facing the main battlefield of national economy” conferred by CAS. Mr. Yang has been engaged in petroleum exploration geophysical research for over thirty years. He played a leading role in some key projects under the National Natural Science Foundation of China, the “Hundred Talents Program” of CAS, the major innovation program of CAS, “973 Program”(also known as the National Basic Research Program of China) and “863 Program” (also known as the Chinese National Programs for High Technology Research and Development). He also directed several national major petroleum projects, Category-A pilot projects initiated by CAS and other scientific research projects. Mr. Yang gained remarkable achievements in the theory, methods and techniques relating to pre-Cenozoic marine facies hydrocarbon geophysical exploration, especially his complex structure seismic pre-stack imaging played an effective role in the hydrocarbon discoveries in the buried hill structure in Bohai Bay Basin, Puguang Gas Field in Sichuan Basin and the lithological reservoir in Hailar Basin and provided critical technical support for China's pre-Cenozoic marine facies hydrocarbon exploration. In 1994, he worked as an associate researcher at the Institute of Geophysics of CAS in 1994 and was promoted as a researcher in 1996. From 2004 to 2017, he acted as the vice director of the Institute of Geology and Geophysics of CAS, and concurrently acted as the director of the Lanzhou Oil and Gas Resources Research Center, CAS. Mr. Yang has been appointed as a non-executive director of the Company since 5 July 2021.