Is it illegal to post advertising flyers? How to deal with it?

Legal analysis: Posting small advertisements requires penalties. If the content of the leaflets is only advertisements and product information, it is not illegal.

Legal basis: Article 43 of the "Beijing City Appearance and Environmental Sanitation Regulations" No one may distribute, hang, or post promotional materials or advertisements in public places without authorization, or in buildings, structures, etc. Engraving, scribbling, and spray-painting slogans, promotional materials, and advertisements everywhere. Anyone who violates the regulations shall be ordered to clear up, illegal property and illegal gains shall be confiscated, and a fine of not less than 100 yuan but not more than 1,000 yuan shall be imposed; if the circumstances are serious, a fine of not less than 1,000 yuan but not more than 10,000 yuan shall be imposed.