Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)
Aerial photo taken on Oct. 27, 2020 shows a view of the Banchangyu Great Wall in Qinhuangdao, north China's Hebei Province. (Xinhua/Yang Shiyao)