legal ground
Article 364 of the Criminal Law
Whoever disseminates obscene books, periodicals, movies, audio-visual, pictures or other obscene articles, if the circumstances are serious, shall be sentenced to fixed-term imprisonment of not more than two years, criminal detention or public surveillance.
Article 68 of the Public Security Administration Punishment Law
Whoever makes, transports, copies, sells or rents obscene books, periodicals, pictures, movies, audio-visual products and other obscene articles or uses computer information networks, telephones and other communication tools to disseminate obscene information shall be detained for more than 10 days and less than 15 days, and may also be fined less than 3,000 yuan; If the circumstances are minor, they shall be detained for not more than five days or fined not more than five hundred yuan.