Article 21 Where any person exploits, according to the relevant provisions of the Copyright Law, a published work that may be exploited without the authorization of the copyright owner, he shall not affect the normal exploitation of the work, nor unreasonably prejudice the legitimate interests of the copyright owner. Article 22 The standard of remuneration for exploitation of works under Article 23, Paragraph 2 of Article 33, and Paragraph 3 of Article 40, of the Copyright Law shall be formulated and published by the copyright administrative department under the State Council in conjunction with the competent price administrative department under the State Council. Article 23 Licensing contracts shall be concluded with copyright owners when exploiting works of other persons. Where the right licensed is an exclusive licensing right, the contracts shall be made in writing, except in cases where works are to be published by newspapers and periodicals. Article 24 The content of the exclusive licensing right provided for in Article 24 of the Copyright Law shall be agreed in contract. Where no such contractual agreement is made or the agreement is not clear, it shall be deemed that the licensee has the right to exclude any other person, including the copyright owner, to exploit the works in the same way. Except otherwise agreed, a licensee who licenses a third party to exercise the same right must be authorized by the copyright owner. Article 25 Any person, who concludes an exclusive licensing contract or assignment contract with a copyright owner, may submit, for filing, the contractual documents to the copyright administrative department. Article 26 Rights and interests related to copyright, as mentioned in the Copyright Law and these Regulations, mean the right enjoyed by publishers in the layout design of their publications, the right enjoyed by performers in their performances, the right enjoyed by producers of audio and video recordings in their products and the right enjoyed by radio and television stations in their broadcasts. Article 27 Publishers, performers, producers of audio and video recordings and radio and television stations, in the course of exercising their rights, shall not prejudice the rights of the copyright owners of the works being used and of the original works. Article 28 Where it is agreed in a book publishing contract that the publisher enjoys the exclusive publishing right, but the contents of the right is not clearly defined, it shall be deemed that the publisher enjoys the exclusive right to publish in the same language of the original edition or revised edition of the book within the term of validity of the contract and in the geographic area agreed under the contract. Article 29 The state of being out of print in relation to a works mentioned in Article 32 of the Copyright Law shall be established where two orders sent by the author to the publisher, are not fulfilled within six months Article 30 To declare that the reprinting of his works in whole or in part is not permitted under Paragraph 2, Article 33 of the Copyright Law, the copyright owner shall make a statement to that effect at the same time when the works is first published in a newspaper or a periodical. Article 31 To declare that the producing of sound recording products of his works is not permitted under Paragraph 3, Article 40 of the Copyright Law, the copyright owner shall make a statement to this effect at the same time when the sound-recording products of the works are legitimately produced. Article 32 Any person who exploits a works of another person under Article 23, Paragraph 2 of Article 33, and Paragraph 3 of Article 40, of the Copyright Law shall pay remuneration to the copyright owner within two months from the date of exploitation of the works. 4