What are people like in China who live at the bottom?

A friend of mine, a technician, told me that she has a customer who is pretty pitiful.
I asked, “How is he pitiful?” She said: He works as a security guard in a factory. He’s almost forty, still not married, and he’s especially honest.
Every payday he comes to see her. And he’s very generous—he often pays for two hours but lets it run into three or even for several hours.
His salary is actually less than 5,000 yuan.
I asked, “Does he like you? You know that, right?”
She said, “Of course I know. But he also knows it’s not possible. He’s been seeing me for three years. Sometimes, if he wins 800 yuan playing mahjong, he’ll still send me a 500-yuan red packet.”
I asked, “Do you take it?”
She said, “Of course I do. Why wouldn’t I? If I don’t take it, he’ll just give it to other technicians.
If you run into other coworkers in the shop, they would’ve already tricked the money out of him.
He doesn’t have a car, so he won’t drive himself. Every time he comes, he takes the bus or a taxi.
So sometimes after work at night, I’ll even drive him back to the factory.
He said I treat him the best.”