Yanchang County est une ville en Chine Shaanxi.
China's First Oil Well Shiyou Xiwang Primary School, Yanchang County 717100 Chine
the First Petroleum Well in China land Petroleum Hope Primary School, Yanchang County 717100 Chine
Yan'an First Well of China Mainland (+86 911 861 2081) Within Yanchang County, Yanchang County 717100 Chine