The main purpose is to add friends first

Then create opportunities, get close to him based on his habits, hobbies and expertise, and finally add him as a friend because of something else

For example The other party has a cover exercise book of Tathagata Palm Cheats

Can you tell me where you bought it? I bought it at XXXX. I really want one. I don’t know the place. I’ll treat you to milk tea. Bring me one. Add a friend and I’ll transfer the money to you

Hope it can help you