Workers collect crude salt at Taibei Saltern in Lianyungang, East China's Jiangsu Province, Sept. 10, 2015. About 500,000 mu (33.333 hectares) of crude salt fields here entered into a harvest season. Salt production area along the Huaihe River is one of China's four largest salt fields. (Xinhua/Geng Yuhe)

Workers collect crude salt at Taibei Saltern in Lianyungang, East China's Jiangsu Province, Sept. 10, 2015. About 500,000 mu (33.333 hectares) of crude salt fields here entered into a harvest season. Salt production area along the Huaihe River is one of China's four largest salt fields. (Xinhua/Geng Yuhe)

Workers collect crude salt at Taibei Saltern in Lianyungang, East China's Jiangsu Province, Sept. 10, 2015. About 500,000 mu (33.333 hectares) of crude salt fields here entered into a harvest season. Salt production area along the Huaihe River is one of China's four largest salt fields. (Xinhua/Geng Yuhe)

Workers collect crude salt at Taibei Saltern in Lianyungang, East China's Jiangsu Province, Sept. 10, 2015. About 500,000 mu (33.333 hectares) of crude salt fields here entered into a harvest season. Salt production area along the Huaihe River is one of China's four largest salt fields. (Xinhua/Geng Yuhe)

A worker collects crude salt at Taibei Saltern in Lianyungang, East China's Jiangsu Province, Sept. 10, 2015. About 500,000 mu (33.333 hectares) of crude salt fields here entered into a harvest season. Salt production area along the Huaihe River is one of China's four largest salt fields. (Xinhua/Geng Yuhe)