It is not illegal to paint Bingdundun Xuerongrong.

The cartoon images of "Bingdundun" and "Xuerongrong" obviously constitute works of art and are protected by copyright law. The copyright owner (Beijing Winter Olympics Organizing Committee) has the right to prohibit others from using the work without its permission, including the development, dissemination and sale of related derivatives that express the work.

First of all, the mascot "Bingdundun" is an important property of the Beijing Winter Olympics Organizing Committee. The Beijing Winter Olympics Organizing Committee has copyright, exclusive rights to registered trademarks, and design rights to the image of "Bingdundun" in accordance with the law. Patent rights, the Chinese and English names of "Bingdundun" also enjoy the exclusive right to register trademarks in accordance with the law.

Therefore, anyone who uses the image or name of "Bingdundun" must abide by the Copyright Law of the People's Republic of China, the Trademark Law of the People's Republic of China, and the Trademark Law of the People's Republic of China. The Patent Law of the People's Republic of China (hereinafter referred to as the Copyright Law, Trademark Law, Patent Law) and other relevant laws and regulations.