A staff worker conducts experiments on products at a laboratory in Ganjiangyuan eco-economic demonstration park in Quannan County, east China's Jiangxi Province, Oct. 9, 2018. In recent years, Quannan County promoted the aromatics industry and built up an eco-economic demonstration park, helping 13,000 rural households increase income by producing essential oil, perfume and cosmetics. (Xinhua/Hu Chenhuan)