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
Aerial photo taken on June 29, 2019 shows workers collecting raw salt at a salt field in Weifang, east China's Shandong Province. (Xinhua/Sun Shubao)
Aerial photo taken on June 29, 2019 shows workers collecting raw salt at a salt field in Weifang, east China's Shandong Province. (Xinhua/Sun Shubao)