If it is published at its own expense, does the copyright of the work permanently belong to the author? Does the money earned by selling books also belong to the author at his own expense?

Hello, whether you publish or not, according to the provisions of China's copyright law, the author enjoys copyright from the date of birth of the work. As for whether it belongs to the author permanently, it depends on your corresponding punishment for copyright. If the copyright owner fails to dispose of the property right of the work, the property interests obtained shall belong to the author. As for the property rights of works, you can transfer or sign relevant contracts with publishing houses, but the personal rights of works cannot be transferred, such as the right of signature.

According to Article 2 of the Copyright Law, works of China citizens, legal persons or other organizations, whether published or not, enjoy copyright in accordance with this Law.

Article 10 Copyright includes the following personal rights and property rights:

(a) the right to publish, that is, the right to decide whether the work is open;

(2) the right of signature, that is, the right to indicate the identity of the author and sign his name on the work;

(3) the right to modify, that is, the right to modify or authorize others to modify a work;

(four) the right to protect the integrity of the work, that is, the right to protect the work from distortion and tampering;

(5) the right of reproduction, that is, the right to make one or more copies of a work by means of printing, photocopying, rubbing, audio recording, video recording, reproduction or reproduction;

(6) the right of distribution, that is, the right to provide the original or duplicate of a work to the public by way of sale or gift;

(7) the right to rent, that is, the right to temporarily license others to use film works, works created by methods similar to filming, and computer software, except that computer software is not the main object of rent;

(8) The right to exhibit, that is, the right to publicly display the original or duplicate of an artistic work or photographic work;

(nine) the right to perform, that is, the right to publicly perform a work and publicly broadcast the performance of the work in various ways;

(10) the right of projection, that is, the right to publicly copy art, photography, movies and works created by methods similar to filming through projectors, slide projectors and other technical equipment;

(11) Broadcasting right, that is, the right to publicly broadcast or disseminate works by wireless means, broadcast works to the public by wired or rebroadcast means, and broadcast works to the public through loudspeakers or other similar tools for transmitting symbols, sounds and images;

(12) the right of information network communication, that is, the right to provide works to the public by wired or wireless means, so that the public can obtain works at the time and place they choose;

(13) the right to make a film, that is, the right to fix a work on a carrier by making a film or by similar methods;

(14) the right of adaptation, that is, the right to change a work and create a new work with originality;

(15) the right to translation, that is, the right to convert a work from one language into another;

(16) the right of assembly, that is, the right to assemble a work or fragments of a work into a new work through selection or arrangement;

(seventeen) other rights that should be enjoyed by the copyright owner.

The copyright owner may license others to exercise the rights specified in Items (5) to (17) of the preceding paragraph and get remuneration in accordance with the agreement or the relevant provisions of this Law.

The copyright owner may assign all or part of the rights specified in Items (5) to (17) of the first paragraph of this article and get remuneration in accordance with the agreement or the relevant provisions of this Law.

If you can give detailed information, you can give a more detailed answer.