Pinduoduo has small profits but quick turnover. Goods with many products are much cheaper than those in JD.COM, Taobao, Tik Tok and physical stores, mainly because shopping with many products saves intermediate links and gives way to consumer welfare. On the other hand, quality wins by quantity, and small profits are quick turnover, so the price and quality of Aizhuo men's trousers in Tik Tok are different.