Each company has its own advantages, and the service and transportation speed of these two companies are very good. Personal experience feels that Amazon's service is better, but JD.COM's book activities are very strong, and it is often 40% or even 30% off when it comes to big activities. Another advantage of JD.COM is that the bill will not be deleted when it is delivered, which is why Amazon will not enter JD.COM. Many books of Amazon are a little cheaper than those of JD.COM. For example, Amazon's books are discounted from 7% to 7.5%, and many books in JD.COM are discounted from 7.5% to 20%, which is also closely related to the activities in JD.COM. But now that there are activities in JD.COM and Amazon, it still depends on where the book you want to buy is cheaper.