Chinese farmers in Shuangyashan city, Heilongjiang province, have adopted a unique farming method by raising 1,600 ducks in rice fields. This method, which combines rice farming with duck breeding, is sustainable and eco-friendly. The ducks help control pests and weeds in the rice fields, reducing the need for chemical pesticides. Their droppings also serve as a natural organic fertilizer. This integrated farming method is part of a local ecological agricultural development, which includes animals like ducks and crabs, and is seen as a model of green and sustainable agricultural development.