A flower grower sorts viola flowers at a flower base in Langfang City, north China's Hebei Province, April 12, 2018. Flower growers here have greatly benefited from what the local government promote in operating the flower business that integrates companies, growers and planting bases. (Xinhua/Li Xiaoguo)

A flower grower waters tulips at a flower base in Langfang City, north China's Hebei Province, April 12, 2018. Flower growers here have greatly benefited from what the local government promote in operating the flower business that integrates companies, growers and planting bases. (Xinhua/Li Xiaoguo)