Is it illegal to tamper with the slogan supported by stars?

It's not illegal. The aid slogan is just the slogan that fans support the stars. There is no registered trademark and no patent application, so it doesn't count.

Legal basis:

Copyright law of the people's Republic of China

Article 52 Anyone who commits one of the following acts of infringement shall bear civil liabilities such as stopping the infringement, eliminating the influence, making an apology and compensating for losses according to the circumstances:

(1) publishing his work without the permission of the copyright owner;

(2) publishing a work created in cooperation with others as a work created by oneself without the permission of a co-author;

(three) did not participate in the creation, in order to seek personal fame and fortune, signed other people's works;

(4) distorting or tampering with other people's works;

(5) Plagiarizing other people's works;

(6) Using a work by means of exhibition, filming of audio-visual products, etc., or using a work by means of adaptation, translation, annotation, etc. without the permission of the copyright owner, except as otherwise provided by this Law;

(seven) the use of another person's work, which should be paid but not paid;

(8) Renting the originals or duplicates of audio-visual works, computer software and audio-visual products without the permission of the copyright owner, performer or producer of audio-visual products, except as otherwise provided by this Law;

(9) Using the layout design of books and periodicals published by publishers without their permission;

(10) Live broadcast or public dissemination of a live performance or recording of a performance without the permission of the performer;

(eleven) other acts of infringement of copyright and copyright-related rights.

Article 53 Anyone who commits one of the following acts of infringement shall bear the civil liability stipulated in Article 52 of this Law according to the circumstances; If the infringement damages the public interest at the same time, the copyright authority shall order it to stop the infringement, give it a warning, confiscate the illegal income, confiscate and harmlessly destroy the infringing copy and the materials, tools and equipment mainly used to make the infringing copy. If the illegal business amount is more than 50,000 yuan, a fine of more than one time and less than five times the illegal business amount may be imposed; If there is no illegal business amount, the illegal business amount is difficult to calculate or less than 50 thousand yuan, a fine of less than 250 thousand yuan may be imposed; If the case constitutes a crime, criminal responsibility shall be investigated according to law:

(1) Reproduction, distribution, performance, projection, broadcasting, compilation and dissemination to the public through information networks without the permission of the copyright owner, except as otherwise provided by this Law;

(2) Publishing books with exclusive publishing rights enjoyed by others;

(3) Reproduction and distribution of audio and video products of their performances without the permission of performers, or dissemination of their performances to the public through information networks, unless otherwise provided for in this Law;

(4) Reproduction, distribution and dissemination of audio and video products made by the producers of audio and video recordings to the public through information networks without the permission of the producers, except as otherwise provided for in this Law;

(5) broadcasting, copying or disseminating radio and television to the public through information networks without permission, except as otherwise provided by this Law;

(6) Deliberately circumventing or destroying technical measures without the permission of the copyright owner or copyright-related obligee, intentionally manufacturing, importing or providing devices or components mainly used for circumventing or destroying technical measures to others, or intentionally providing technical services for circumventing or destroying technical measures to others, except as otherwise provided by laws and administrative regulations;

(7) Deliberately deleting or changing works, layout designs, performances, audio-visual products or rights management information on radio and television without the permission of the copyright owner or copyright-related obligee, and providing them to the public knowing or should know that works, layout designs, performances, audio-visual products or rights management information on radio and television have been deleted or changed without permission, except as otherwise provided by laws and administrative regulations;

(eight) the production and sale of works signed by others.