Wall writing refers to the appearance of some unauthorized or unauthorized words, patterns or logos on the walls of buildings or other public places. This phenomenon is very common in cities, especially in some communities, public places and commercial streets in the city center.

There are many reasons for writing on walls, including:

1. To express emotions. Some people will paint their own emotional thoughts on the wall, such as some political slogans or emotional declarations, to express their opinions.

2. Sign and take a souvenir. Some people leave their names or marks on the wall as a souvenir or to show off.

3. Express identification with a person or thing. Some people will express their support or identification with a certain person or thing on the wall, such as certain singers, movie stars, etc.

4. Vandalism. Some young people or vandals will write destructive graffiti on the walls to achieve the effect of destruction and record-breaking.

5. Express culture and art. Some art lovers express their cultural and artistic views and creative imagination through wall graffiti or paintings.

The existence of text on walls will have a certain impact on the urban environment. They will destroy the beauty and cleanliness of public places, and they will also cause public safety issues. In order to solve this problem, the government and social organizations should strengthen urban management, promptly clean up violations, and strengthen urban planning and management to make the city more beautiful, tidy, and orderly. At the same time, some beneficial cultural and artistic expressions should also be encouraged and creative graffiti and wall paintings should be supported to promote the prosperity and development of the city's cultural and artistic atmosphere.