An aerial photo taken on May 2 shows agricultural greenhouses in Lishu county, Siping city, located in Northeast China’s Jilin province. Lishu county is a national grain-producing region, and farmers here used to plant corn for a living. In recent years, the county has developed a greenhouse economy, enabling farmers to plant in all seasons. According to official figures, by the end of 2018, the county had 32,000 greenhouses covering an area of 2,600 hectares. The greenhouses produce 400,000 tons of fruit and vegetables each year, bringing in an annual output value exceeding 1 billion yuan ($147.68 million). [Photo by Zhang Nan/Xinhua]