Li Hao is a ticket seller on Line 2 of the subway. He wears a yellow plaid uniform and has a white cloth bag slung across his shoulder to hold the fare money.,As a train ticket collector, I had a good vantage point and developed hawk-like vision. I could see and remember every man, woman, and child who boarded the train.,“This old man seems to be daydreaming.” Wang Kangnian put down the telescope and pondered for a moment, “What is he thinking about”。