Teacher Chen Dan (C F) poses with foreign traders who learn Chinese language in Yiwu, a famous production base for small commodities in east China's Zhejiang Province, Aug. 8, 2016. The Tongyue service center language training class in Yiwu has offered free Chinese courses for more than 6,000 people since 2014. There are more than 13,000 resident foreign traders from over 100 countries and regions in Yiwu, according to statistics. (Photo:Xinhua/Tan Jin)
