Beijing, March 19 (Youth.cn) - Busy spring farming scene on Xiangyang Reservoir in Suqian City, Jiangsu Province. Planters were putting “clam seedlings” in water and scavenging dungs on the surface of the reservoir to ensure the growing environment of the pearls. These years, adapting mix-raising mode of “fish-shrimp-pearl”, the local planters have successfully purified the water to increase the unit output. An ecological cycle industrial chain has been formed to achieve economic-ecological benefits. It has become an typical industry in the frame of rural revitalization. Photo/CFP