A harvester reaps crops at a sea rice field outside Lianyungang, East China's Jiangsu Province on October 24, 2021. The rice field was reclaimed from a former seaside salt pitch covering an area of 20,000 mu (1,333.33 hectares). China has more than 1 billion mu of saline-alkali land that has not been cultivated so far, with promising potential. Photo: VCG