Why are there so many typos in pirated books?

There are many reasons why there are so many typos in pirated books. 1. The production process of pirated books may not have been strictly proofread, resulting in typos or missing some important plots. 2. The producers of pirated books might not have received formal literary training or did not have sufficient literary attainments and knowledge reserves, resulting in mistakes in the writing process. 3. The creator of the pirated book may have used a simplified version of the text or simplified font, resulting in typos or typographic errors in the writing process. 4. The producers of pirated books may have used the contents of their works without the authorization of the copyright owner, so there may be some mishandling or inappropriate citations. The typos of pirated books were mostly related to the knowledge level and quality of the producers and editors of the pirated books, as well as the publishing environment and the management of the editors.