Advertisements should be concise, easy to understand, catchy, with prominent themes and good expression effects. Here, we should closely follow the "city study" and its characteristics to advertise, and we should not sell ourselves short. Answer on the basis of reading the materials and grasping the facts. For example, we can write it as "city study, comfortable reading paradise at home".

Example of answer:

City study, a comfortable reading paradise like home!

City study, open 24 hours.

City study, the ocean of books.