Recognized many billboards on the street?

My home is in Liujiang. There are many advertising slogans posted on the streets of Liujiang: there are advertisements for rent, unlocking, tattoos, etc.

In the blink of an eye, the advertising slogan disappeared. What's going on? It turned out that the cleaning staff was a big help. The cleaning workers worked tirelessly on the street to clean billboards. After cleaning this place, they went to clean that place again. It was very hard.

However, some people illegally and illegally posted new advertisements in the area where the cleaning staff had just cleaned, which made cleaning a lot of trouble.

Therefore, we should cherish the fruits of labor of cleaning workers and make a contribution to our environmental protection.