Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

People have fun at the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province, on June 21, 2020. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows boats at the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)

Aerial photo taken on June 21, 2020 shows a view of the Hongfeng Lake scenic area in Qingzhen City, southwest China's Guizhou Province. (Xinhua/Tao Liang)