Customs officers check European wine imported with the London-Yiwu cargo train at a warehouse of bonded logistics center in Yiwu City, east China's Zhejiang Province, May 3, 2017. Yiwu City, as the world's largest small commodity market and transfer hub, saw the total import and export value of 48.88 billion yuan (7.08 billion U.S. dollars) in the first quarter of 2017, growing 23.72 percent year on year. Over 1.8 million kinds of commodities have been exported from Yiwu to 219 countries and regions in the world. (Xinhua/Tan Jin)