you can't generalize, but you must never use it without authorization. 1. Absolute Prohibition Article 1 (1) (8) of the Trademark Law stipulates: "The following marks shall not be used as trademarks ..... which are harmful to socialist morality or have other adverse effects." The Trademark Examination and Trial Standards jointly formulated by the Trademark Office and the Trademark Review and Adjudication Board defines other adverse effects: "It means that the words and graphics of a trademark or ... have a negative and negative impact on China's politics and economy." At the same time, it is stipulated that "having the same or similar names as the leaders of countries, regions or political international organizations" is politically harmful. Therefore, according to the above laws and regulations, it can be seen that the word "political" ranks first in the review of the adverse effects of trademarks, and the trademark review agencies in China have always been strict in their review. Therefore, as you mentioned, the portraits and names of leading celebrities such as Mao Zedong are absolutely forbidden to be registered and used. 2. Relative restrictions The Trademark Office stipulates that if a portrait of a person is used as a trademark to apply for registration, the applicant must provide the power of attorney of the portrait owner and it must be notarized by a notary office. Therefore, other so-called "celebrity" portrait trademarks can only be successfully registered if they meet this requirement. As for other behaviors such as not registering and using others' portraits without authorization, there are very high legal risks, so it is suggested not to do so.