This picture vividly depicts a busy city. A red car speeds down the street. High-rise buildings, billboards, and neon lights flash adding endless energy and color to the city. On the street, the flow of vehicles is endless, forming a flow of cars. Pedestrians are also in an endless stream. They hurry or leisurely stroll, together constituting the busy and noisy city. Every detail is full of the breath of life, showing the prosperity and beauty of modern cities.