Legal analysis: If it is original, it is not illegal. If someone else's work is used for commercial purposes, you must negotiate with the original author, otherwise it will be illegal infringement.
Legal basis: "Criminal Law of the People's Republic of China"
Article 213 Without the permission of the registered trademark owner, the use of the same product on the same product as the registered trademark If the trademarks are identical, if the circumstances are serious, they shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and concurrently or solely with a fine; if the circumstances are particularly serious, they shall be sentenced to fixed-term imprisonment of not less than three years and not more than seven years, and concurrently fined.
Article 215 Whoever forges or manufactures without authorization a registered trademark of another person or sells a forged or unauthorized registered trademark shall, if the circumstances are serious, be sentenced to fixed-term imprisonment of not more than three years, criminal detention or surveillance, and shall also be sentenced to Or a fine alone; if the circumstances are particularly serious, the offender shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years and shall also be fined.
Article 216 Whoever counterfeits the patent of others, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention, and shall also or solely be fined.