There are many ways to buy genuine books. The first is the self-operated books of Amazon, JD.COM and Dangdang. Please note that they are self-employed. As long as it is self-operated, genuine books can be guaranteed.
Secondly, it is a self-operated Tmall store or e-commerce platform online store of major publishing houses and publishing companies. Just look at "self-employment". The advantage of publishers opening their own stores is that they can buy signed books.
Finally, there are offline Xinhua Bookstore and independent bookstores.