Farmers work in a rice field of a family farm in Leqiao Township of Lujiang County, east China's Anhui Province, Sept. 18, 2017. A method of rice farming that relies on ducks to eat insects and weeds has been promoted in Lujiang County in recent years. It's an eco-friendly farming system, avoiding using toxic pesticides while also utilizing duck's droppings as fertilizer. (Xinhua/Zuo Xuechang)