The purchased e-books can be found in the following ways: 1. E-book stores: For example, Amazon's iPhone, Apple's iBooks, Dangdang Books, and Jingdong e-books can search for books of interest on these platforms and download or read them. 2. Search engines: Use search engines such as Google, Baidu, etc. to enter the title or author's name to find related e-books. If you found a link to an e-book store in the search results, you could download the books you bought directly from the store. 3. Websites: Some websites provide online reading of e-books, such as Jianshu, Douban reading, etc. You can search for books of interest on these platforms and read them online. Regardless of which method you use, it is recommended that you confirm that the e-book you purchase can be read on your device and meets your reading needs before purchasing it.