Second, download a kindle reader. Android /ipad/iphone version, etc. For example, my N7 version of Android pad.
Log in to the reader with your account again. At this point, the device will be registered in your account.
Finally, log on to Amazon China. Kindle book home page. Find the book you want and click Buy Now. Do it. You will be asked to bind a credit card in the middle. Whatever, just click Continue.