Workers collect the crude salt at Changlu salt field in Tangshan City, north China's Hebei Province, Sept. 21, 2017. Changlu is a major production base for sea salt in the country. (Xinhua/Yang Shiyao)
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Workers collect the crude salt at Changlu salt field in Tangshan City, north China's Hebei Province, Sept. 21, 2017. Changlu is a major production base for sea salt in the country. (Xinhua/Yang Shiyao)
