A staff member checks vegetables growing soil-free at a greenhouse of an agricultural garden in Nangang Town of Hefei City, east China's Anhui Province, March 31, 2021. Under the soilless cultivation systems, vegetables in this agricultural garden grow vertically on the cultivation racks, with the spraying devices atomizing nutrient solution and spraying it directly onto the root system of the plants, greatly saving the land use area and labor cost. (Xinhua/Zhou Mu)