Staff work at an e-commerce service company in Yiwu, east China's Zhejiang Province, on Oct. 25, 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. (Photos: Xinhua)

Ukrainian merchant Odnostalchenko Mykola (L) talks with staff of a company in Yiwu at the 24th China Yiwu International Commodities Fair in Yiwu, east China's Zhejiang Province, on Oct. 27, 2018. After 40 years of development, Yiwu, now a county-level city, has been well-known as the world's largest wholesale market for daily commodities.

Feng Aiqian, 78, one of the first batch of merchants of Yiwu's small commodities market, tells about her entrepreneurship experience in Yiwu, east China's Zhejiang Province, on Oct. 25, 2018.

Photo taken on Oct. 23, 2018 shows the scene of a cross-border e-commerce forum held in Yiwu, east China's Zhejiang Province.

A China-Europe freight train from China's Yiwu to Spain's Madrid departs from the Yiwuxi Railway Station in Yiwu, east China's Zhejiang Province, on Oct. 27, 2018.

Staff of e-commerce companies are seen in Yiwu, east China's Zhejiang Province, on Oct. 31, 2018.

Iranian merchant Hamid Dehgh (standing) talks with staff at his company in Yiwu, east China's Zhejiang Province, on May 8, 2017.

Staff design an e-commerce website homepage at an innovation company in Yiwu, east China's Zhejiang Province, on Sept. 12, 2018.