Books are the spiritual food for human beings, the medium for spreading advanced ideas and the ladder for the progress of human civilization. So there is a demand for books in the market today, and there is a great demand for books in China, thanks to the huge student group and advanced elements who love learning. But books generally involve copyright, so do you need the authorization of the publishing house to sell books? The following is answered by the search network Xiaobian, hoping to help you.