JD.com and Pinduoduo have different shipping fee policies. JD.com charges shipping fees to consumers, while Pinduoduo charges commissions to merchants. Pinduoduo's merchants will take the commissions into consideration when selling products, so they will not charge consumers additional shipping fees. JD.com's logistics system has invested more and needs to be built and maintained across the country, so it needs to charge consumers a certain amount of shipping fees to support operating costs. This is also the difference caused by the difference in business strategies between JD.com and Pinduoduo.