Staff of e-commerce companies are seen in Yiwu, east China's Zhejiang Province, on Oct. 31, 2018. Forty years ago, Yiwu was a small agricultural county in the middle of Zhejiang Province. Since China's reform and opening-up, the county has seized any opportunities to continuously develop and innovate its economy. After 40 years of development, Yiwu, now a county-level city, has been well-known as the world's largest wholesale market of daily commodities.[Photo/Xinhua]