Visitors learn about soybean at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
In pics: 19th China Changchun Int'l Agriculture and Food Fair Expo
Source: Xinhua| 2020-08-15 20:07:19|Editor: huaxia
