Aerial photo taken on July 24, 2018 shows the colorful Salt Lake in Yuncheng City, north China's Shanxi Province. The lake has different colors as the water density changes. (Xinhua/Xue Jun)

Aerial photo taken on July 24, 2018 shows the colorful Salt Lake in Yuncheng City, north China's Shanxi Province. The lake has different colors as the water density changes. (Xinhua/Xue Jun)

Aerial photo taken on July 24, 2018 shows the colorful Salt Lake in Yuncheng City, north China's Shanxi Province. The lake has different colors as the water density changes. (Xinhua/Xue Jun)

Aerial photo taken on July 24, 2018 shows the colorful Salt Lake in Yuncheng City, north China's Shanxi Province. The lake has different colors as the water density changes. (Xinhua/Xue Jun)

Aerial photo taken on July 24, 2018 shows the colorful Salt Lake in Yuncheng City, north China's Shanxi Province. The lake has different colors as the water density changes. (Xinhua/Xue Jun)