Zurich's first impression is that it is a modern metropolis with tall buildings in the city, but unlike cities in China, it is not as busy as other cities. Instead, you can see many people walking on the wide streets. The city is not big. If you walk along the main road, you can see a large lake, which is crystal clear and seems to be endless. There are many black swans and white swans playing by the lake. They are not afraid of people at all and will take the initiative to come forward to look for food, which is very interesting.