How much should I give to a girl introduced by a friend who sends me a WeChat red envelope?

If you are introduced to a girl by a friend, if you have just met, you have just added friends, and you haven’t chatted much yet, then I think you can at best give it to her. It only costs 52 yuan to send one. It doesn’t need to be more, just 52 yuan. It's enough, and it doesn't make you look stingy or wealthy. In fact, girls are sometimes very disgusted with people who deliberately show that they are rich, so I think it is enough for you to send him 52 yuan.