First of all, all books are copyrighted. To be precise, they are called copyrights. Generally speaking, the copyright owner is the author (there are exceptions).
Secondly, you can read the full text of the book on the program, because the program has been authorized by the author to use the author's book on his own website. The relationship here is that the author of 1 owns the copyright. It is the author's permission to use this book to watch plays. You should pay the author to watch the program.
Thirdly, of course, books sold in bookstores are also copyrighted. Its form is like this. The author naturally owns the copyright of this book. In the process of publishing, the author signed an agreement with the publishing house to grant one or more copyrights (there are 17 kinds in China) to the publishing house, and the publishing house will pay the author for publishing social printed books.
According to the relevant laws and regulations of our country, anyone who uses a work with copyright owned by others must obtain the consent of the copyright owner and pay remuneration. Of course, some people don't do this. This kind of behavior is piracy.
I wonder if you are satisfied? You can leave me a message if you need it. I can clarify your question and explain it to you.
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