Farmers harvest American ginseng in Gaocun Township of Wendeng District in Weihai, east China's Shandong Province, Oct. 3, 2018. Wendeng is one of the major American ginseng production areas in China, with 55,000 mu (3,667 hectares) of Amerian ginseng fields. Local government has cooperated with research institutes to develop ginseng-related products to increase farmers' income in recent years. (Photo: Xinhua)

A worker processes American ginseng products at a company in Wendeng District of Weihai, east China's Shandong Province, Oct. 3, 2018. Wendeng is one of the major American ginseng production areas in China, with 55,000 mu (3,667 hectares) of Amerian ginseng fields. Local government has cooperated with research institutes to develop ginseng-related products to increase farmers' income in recent years. (Photo: Xinhua)

Workers pack Amerian ginseng tea products at a company in Wendeng District of Weihai, east China's Shandong Province, Oct. 3, 2018. Wendeng is one of the major American ginseng production areas in China, with 55,000 mu (3,667 hectares) of Amerian ginseng fields. Local government has cooperated with research institutes to develop ginseng-related products to increase farmers' income in recent years. (Photo: Xinhua)

A worker works at a company producing American ginseng products in Wendeng District of Weihai, east China's Shandong Province, Oct. 3, 2018. Wendeng is one of the major American ginseng production areas in China, with 55,000 mu (3,667 hectares) of Amerian ginseng fields. Local government has cooperated with research institutes to develop ginseng-related products to increase farmers' income in recent years.(Photo: Xinhua)