The Douluo Continent manga can be purchased in some comic bookstores or online comic platforms. 1. Comic book store: You can go to the local comic book store to buy the Douluo Continent comic book. 2. Online comics platforms: platforms such as Tengxun Comics and Netease Comics have standalone copies of Douluo Continent comics for sale. You can read and buy them online. If there was no comic book store or online comic platform in the city, one could search the local comic market online to see if there were any merchants selling Douluo Continent comics.