Workers load Chinese chives at the Jidong international farm produce logistics center in Laoting County, north China's Hebei Province, on Dec. 13, 2018. Laoting County has relied on vegetable growing to boost village development and increase farmers' incomes, planting more than 33,533 hectares of vegetables and realizing annual output of 3.2 million tonnes. (Xinhua/Yang Shiyao)