Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Photo taken on Aug. 6, 2021 shows the Danxia landform, a landscape characterized by reddish sandstone features, in sunrise in Longzhou Town of Jingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)