Hanoi is a historical and present-day city of Vietnam. I had a feeling of history and culture in Hanoi. The first thing I looked at was when I entered Hanoi, the only architecture of Hanoi. Bắc curving buildings of the colonial period and ancient French architectural style and the later modern Vietnam architectural style are combined to form a unique city pattern. Walking on the streets of Hanoi also has an immersive feeling. There is an inexplicable power between the four walls. I seem to be crossing in time. Gradually I have hallucinated and can hear the echoes of history.