No, according to the relevant information of Changqing Company, Qinggang Company is a subsidiary of Changqing Company, belonging to Changqing Company, but not Changqing Company, located in Xi 'an. China Petroleum Changqing Oilfield Company (PCOC) is a regional oilfield company affiliated to China Petroleum and Natural Gas Co., Ltd., headquartered in Xi, Shaanxi Province, and operating in Ordos Basin, the second great basin in China.