Two copies. According to the query of official website of Jingzhou Yangtze University, the School of Petroleum of this school enrolled the second batch of candidates in July 2023, belonging to two universities. Yangtze University is a comprehensive university jointly founded by Hubei Provincial People's Government, Ministry of Agriculture and Rural Affairs of the People's Republic of China, China Petroleum and Natural Gas Corporation, China Petrochemical Corporation and China Offshore Oil Corporation.