Photo taken on April 20, 2020 shows the Soilless cultivation of vegetables at the 21st China (Shouguang) International Vegetable Science and Technology Expo in Shouguang, east China's Shandong Province.Photo:Xinhua
Photo taken on April 20, 2020 shows the Soilless cultivation of vegetables at the 21st China (Shouguang) International Vegetable Science and Technology Expo in Shouguang, east China's Shandong Province.Photo:Xinhua
Photo taken on April 20, 2020 shows the Soilless cultivation of vegetables at the 21st China (Shouguang) International Vegetable Science and Technology Expo in Shouguang, east China's Shandong Province.Photo:Xinhua
Photo taken on April 20, 2020 shows the Soilless cultivation of vegetables at the 21st China (Shouguang) International Vegetable Science and Technology Expo in Shouguang, east China's Shandong Province.Photo:Xinhua