Aerial photo taken on Aug. 7, 2021 shows a salt lake in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 7, 2021 shows salt lakes in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 7, 2021 shows salt lakes in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Salt factory employees work at a salt lake in Dingbian County, northwest China's Shaanxi Province, Aug. 7, 2021. (Xinhua/Tao Ming)

In this aerial photo, salt factory employees load salt onto a truck at a salt lake in Dingbian County, northwest China's Shaanxi Province, Aug. 7, 2021. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 7, 2021 shows salt lakes in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Photo taken on Aug. 7, 2021 shows salt lakes in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 7, 2021 shows a salt lake in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

Aerial photo taken on Aug. 7, 2021 shows a salt lake in Dingbian County, northwest China's Shaanxi Province. (Xinhua/Tao Ming)

In this aerial photo, salt factory employees work at a salt lake in Dingbian County, northwest China's Shaanxi Province, Aug. 7, 2021. (Xinhua/Tao Ming)

来源：Xinhua