Aerial view of salt lake in Yuncheng, Shanxi(1/7)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)

Aerial photo taken on Sept. 23, 2019 shows the scenery of the salt lake in Yuncheng City, north China's Shanxi Province. (Xinhua/Yang Chenguang)