Aerial photo taken on Sept. 20, 2018 shows combine harvesters working in rice paddies during a rice harvest festival held in Xinpu Village, Xuyi County of Huai'an, east China's Jiangsu Province. The local farmers are encouraged to use rice paddies to raise crayfish, which is also a popular foodstuff in Chinese cooking. The Xuyi County government has succeeded in boosting farmers' income by promoting such production mode. (Xinhua/Li Xiang)