How to punish online advertisements involving pornography?

Sending pornographic advertisements belongs to spreading obscene articles. 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 and less than 15, and may also be fined less than 3,000 yuan. If the circumstances are minor, they shall be detained for less than 5 days or fined for less than 500 yuan.

legal ground

Article 66 of the Public Security Administration Punishment Law

Prostitution and whoring shall be detained for more than 18 days and less than 15 days, and a fine of less than 5,000 yuan may be imposed; If the circumstances are minor, they shall be detained for less than 5 days or fined for less than 500 yuan. Whoever solicits prostitutes in public places shall be detained for not more than five days or fined not more than 500 yuan.