Write a paragraph using contrasting techniques to express the personality characteristics of a character you are familiar with.

In the bustling crowd around me, there are parents who love me, classmates who attend class with me every day, and teachers who work hard... Among them is a stranger who left a deep impression on me-- Female sanitation worker. Last winter, the weather in Haiyan was extremely cold after the cold wave.

I went to school in the morning. When I got to Qiyuan Road, suddenly a biting cold wind blew by. I couldn't help but said: "Wow, it's so cold!" When I looked up, I suddenly saw a man sitting on a stone pillar on the side of Qiyuan Road. A middle-aged woman wearing orange sanitation uniform,