![](http://www.ecns.cn/hd/2021/07/23/26bb5081140d420d9b94aebdfc6f07a8.jpg)
The remains of the Great Wall emerge from a reservoir in Qianxi County, Hebei Province after the water receded. This section of the Great Wall, built in the Ming Dynasty (1368-1644), was inundated due to the construction of Panjiakou Reservoir, a water-control project in the 1970s. (Photo: China News Service/Bai Yunshui)
![](http://www.ecns.cn/hd/2021/07/23/6813f19163ec450399d41e97437c2b9e.jpg)
The remains of the Great Wall emerge from a reservoir in Qianxi County, Hebei Province after the water receded. This section of the Great Wall, built in the Ming Dynasty (1368-1644), was inundated due to the construction of Panjiakou Reservoir, a water-control project in the 1970s. (Photo: China News Service/Bai Yunshui)