On April 20, Prof. Sun Qingyun, director of US-China Clean Energy Research Center (CERC) of West Virginia University, Prof. Wang Xiangzeng, deputy general manager of Shaanxi Yanchang Petroleum (Group) Co., Ltd., Prof. Ren Xiaotong, deputy general manager of Shanxi Gemeng International Energy Co., Ltd., together with three other persons visited CUMTB. President Yang met with the delegation. After the meeting, Prof. Sun and Prof. Wang gave lectures respectively entitled “Game between International Oil Price and Shale Gas” and “Yanchang Continental Shale and China Shale Gas Development Process & Condition” in School of Chemical & Environmental Engineering, which were well received by faculty and students.