Talking about streets and alleys

in a good mood

You can write it like this

He is only on the flowing street, happy as a bird,

He felt that he was flying over a sea of people, and the wind was overhead, which was particularly cool.

If you are in a bad mood, you can write like this.

In this endless street, he is like a lost dog, squatting there, smoking a cigarette, surrounded by smoke every day.