Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)

Aerial photo taken on June 15, 2020 shows a view of Danxia landform, a landscape characterized by reddish sandstone features, in Guide County, northwest China's Qinghai Province. (Xinhua/Wu Gang)