Paris is the capial of France. Its subway is very special. You can enjoy its culture when you are in this city. First you see many people reading books in the subway. Whenever they are in the subway or at the station, there is always a book in the hand. The subway station in Paris is not big , but each of them has its special facts. Some stations looks ships. Some have clothes, caps and shoes. And every station has a big advertisement picture. But many of them are for selling clothes and cosmetics . You can meet some beggars  in the subway. But the beggars in the Paris subway are also very special. They often play the violin or guitar in the train. They don't feel shy at all. Instead they think it is natural. After playing, they will go around the train and ask you to give them some money. If you want to learn more about Paris, go to the subway and enjoy its culture by yourself. What's the main idea of this passage?
Reading in the Paris subway. The subway is the window of the Paris culture. The beggars in the Paris subway station usually have some skills Each of the subway station in the Paris has its special facts.