Zhang Yousheng from Taiwan seizes an e-commerce opportunity on the Chinese mainland by selling dim sum in Hangzhou, Zhejiang Province. (Photo provided by Zhang Yousheng) (ECNS) — Zhang Yousheng from Taiwan has seized an e-commerce opportunity on the Chinese mainland by selling dim sum in Hangzhou, Zhejiang Province. Zhang is from Zhanghua and came to Hangzhou with his parents when he was nine years old. Zhang was admitted to Zhejiang Sci-Tech University where he tried out internet sales. Inspired by friends who asked him to help buy clothes that sold in Taiwan, Zhang tried to set up sales channels in…