Customs staff check containers in Yiwu, east China's Zhejiang Province, May 3, 2017. According to Hangzhou customs, Zhejiang's foreign trade value amounted to 2.56 trillion yuan (about 397.6 billion U.S. dollars) in 2017, up 15.3 percent year on year. Exports and imports grew 10.1 percent and 35.6 percent year on year respectively. (Xinhua/Tan Jin)