A staff member checks the growing condition of melons at the Jianghe agricultural complex in Quannan County, east China's Jiangxi Province, Oct. 10, 2018. Taking advantage of its mountain climate, which has a big temperature difference between day and night, Quannan County established the Jianghe agricultural complex featuring a combination of modern agriculture, sightseeing tourism and new rural construction. The complex, which covers an area of about 50,000 mu (3,333 hectares), adopts a standardized management mode to develop the alpine vegetable planting and plays a role in helping local farmers increase income. (Xinhua/Hu Chenhuan)