Aerial photo taken on Oct. 11, 2020 shows the autumn scenery of Xinglong Mountain in Yuzhong County, northwest China's Gansu Province. (Photo by Wang Kexian/Xinhua)

Aerial photo taken on Oct. 11, 2020 shows tourists visiting Xinglong Mountain in Yuzhong County, northwest China's Gansu Province. (Photo by Wang Kexian/Xinhua)

Tourists visit Xinglong Mountain in Yuzhong County, northwest China's Gansu Province, Oct. 11, 2020. (Photo by Wang Kexian/Xinhua)

Tourists visit Xinglong Mountain in Yuzhong County, northwest China's Gansu Province, Oct. 11, 2020. (Photo by Wang Kexian/Xinhua)

Aerial photo taken on Oct. 11, 2020 shows the autumn scenery of Xinglong Mountain in Yuzhong County, northwest China's Gansu Province. (Photo by Wang Kexian/Xinhua)