A villager shows small crabs that are going to be put into water at a crab breeding base in Suining county, Xuzhou city, Jiangsu province, March 11, 2021. In recent years, the county adjusted measures to local conditions and promoted complex ecological agriculture mode, which combines the planting of rice with breeding of economic aquatic animals such as crabs, shrimps and fish, advancing rural revitalization. [Photo/Xinhua]
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