My wife sold a villa yesterday and earned a commission of 100,000. When she got home, she told me she wanted to treat her colleagues to a meal. I told her not to invite her colleagues—just go treat the client. A few days later, the client introduced a new client to my wife, and the commission came to 120,000. My wife asked me: Do we need to treat the client to another meal? I shook my head and told my wife to wrap a 30,000 red envelope for the client. Although she thought it was too much, she still did it anyway. A few more days passed, and the client brought two more friends to buy villas—she got 200,000 directly.