It depends on what you bought. Of course, you buy books on Dangdang. Dangdang started with books, and books are complete. If you buy daily necessities, household appliances and digital products, JD.COM will be good. It will be special from time to time, and it is convenient to return them if you are not satisfied. Clothing in the two places is similar, and they are all operated by third parties. Both websites try to choose their own shopping, which is hard to say for third parties.