A staff member cast eggs of trichogramma, a kind of pests' natural enemy, on Wuyuan Farm in Huinan County, northeast China's Jilin Province, July 30, 2019. Huinan is one of the leading rice producing areas in northeast China. In Huinan's Chaoyang Township, local authorities take various measures to boost green and organic agricultural development including raising ducks in rice fields, raising pests' natural enemy, spraying fungicides and disinfesting fields by solar power lamps. The rice production wins market share due to better quality and green development. (Xinhua/Wang Haofei)