From the Brandenburg Gate, when we were approaching, there was a half-underground restaurant on the roadside. The locals had a meal on the street. We also experienced the local characteristics. At first, the buildings and courtyards opposite Humboldt University were mistaken for Humboldt University, which was very beautiful. Through the teaching building, you can see the courtyard inside, the environment is good, not too far, because the journey is relatively tight. In addition, toilets in universities charge a fee. McDonald's, Ka DeWe, railway stations and so on are all charged...