It is illegal to post small advertisements on couplets.

according to article 42 of the advertising law of the people's Republic of China, it is forbidden to post and distribute advertisements in public places, such as public places, transportation, cultural places, stadiums, hospitals, schools, etc., and it is also forbidden to set up billboards and lanes in public places such as cultural monuments, scenic spots, parks, green spaces and streets. Therefore, it is illegal to post small advertisements on couplets.

In addition to violating the law, posting small advertisements on couplets will also affect the beauty and cleanliness of the city and bring unnecessary interference and trouble to citizens and tourists.