Twenty kilometers east of #CNPC's Yumen Oilfield, one of China's earliest developed oilfields, lies Jiayu Pass, a World Cultural Heritage site. First built in the 5th year (1372) of the Hongwu reign in the Ming Dynasty, the 60-kilometer-long pass was the western end of the Great Wall of the Ming Dynasty (1368-1644) and served as a defense system. More than 600 years later, the ancient Chinese fortress has become a famous tourist attraction. #CNPCGreenDevelopment | CNPC

The Jiayu Pass is not only a pass standing at the western end of the Ming Dynasty-era Great Wall, but a vital pass on the ancient Silk Road with a history of over 600 years. Originally built to defend against external invasions, the Jiayu Pass stands today as the best-preserved and most spectacular ancient military fortress along the Great Wall. Join China Daily reporter Peng Yixuan as she explores the wonders of the Jiayu Pass! #SeeWhatXiSees | China Daily