A child looks at a parrot fish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
A child looks at parrot fish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
A visitor takes photos of jellyfish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
Visitors look at jellyfish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
A visitor takes photos of jellyfish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
A visitor takes photos of fish at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Yan Linyun)
A visitor looks at millets at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
Visitors look at sorghum at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
Visitors look at okra at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
Visitors look at sorghum at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
A visitor takes photo of sunflowers at the 19th China Changchun International Agriculture and Food Fair Expo, in Changchun, northeast China's Jilin Province, Aug. 15, 2020. (Xinhua/Xu Chang)
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)