Is it illegal to post small advertisements now?

Legal analysis: It is illegal to post small advertisements on the wall at will. He is suspected of damaging public and private property and can be detained and fined. According to the relevant management regulations, no unit or individual is allowed to scribble or depict on urban buildings, facilities and trees. Units and individuals are not allowed to hang or post promotional materials on urban buildings and facilities. Those who portray, scribble or post at will shall be ordered to clear within a time limit and be fined between 100 yuan and 500 yuan; If it is not cleared within the time limit, it will be cleared on its behalf, and the expenses required will be borne by the violator. If losses are caused, they shall be liable for compensation according to law.

Legal basis: Article 49 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment, whoever steals, swindles, plunders, robs, extorts or intentionally damages public or private property shall be detained for more than five days and less than ten days, and may also be fined less than 500 yuan; If the circumstances are serious, they shall be detained for not less than 10 days but not more than 15 days, and may also be fined not more than 1,000 yuan.