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 agricultural mode. (Xinhua/Li Xiang)

Dancers perform at the opening ceremony of a rice harvest festival held in Xinpu Village, Xuyi County of Huai'an, east China's Jiangsu Province, Sept. 20, 2018. 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 agricultural mode. (Xinhua/Li Xiang)

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 agricultural mode. (Xinhua/Li Xiang)