A worker collects the agaricus bisporus cultivated in the Modern Agricultural Demonstration Zone of Guannan County, Lianyungang, east China's Jiangsu Province, on Feb. 21, 2019. A series of favorable policies, project-driven approaches and training programs applied to the Guannan Modern Agricultural Demonstration Zone have promoted the zone into a whole industry chain of mushroom production, which bring considerable benefits to local economy. (Xinhua/Geng Yuhe)

　　A worker picks the agaricus bisporus cultivated in the Modern Agricultural Demonstration Zone of Guannan County, Lianyungang, east China's Jiangsu Province, on Feb. 21, 2019. A series of favorable policies, project-driven approaches and training programs applied to the Guannan Modern Agricultural Demonstration Zone have promoted the zone into a whole industry chain of mushroom production, which bring considerable benefits to local economy. (Xinhua/Geng Yuhe)

　　Workers pick the agaricus bisporus cultivated in the Modern Agricultural Demonstration Zone of Guannan County, Lianyungang City, east China's Jiangsu Province, Feb. 21, 2019. A series of favorable policies, project-driven approaches and training programs applied to the Guannan Modern Agricultural Demonstration Zone have promoted the zone into a whole industry chain of mushroom production bringing considerable benefits to local economy. (Xinhua/Geng Yuhe)

　　Workers pick the agaricus bisporus cultivated in the Modern Agricultural Demonstration Zone of Guannan County, Lianyungang, east China's Jiangsu Province, Feb. 21, 2019. A series of favorable policies, project-driven approaches and training programs applied to the Guannan Modern Agricultural Demonstration Zone have promoted the zone into a whole industry chain of mushroom production bringing considerable benefits to local economy. (Xinhua/Geng Yuhe)