What does it mean to sing in KTV, put a pack of cigarettes on the table, open it and take out one, and the lighter is standing?

If you are interested in him, just take out the cigarette and put it in your mouth (don't touch his lighter). He gives you a point, indicating that the price has been set. If he is not satisfied with the price, he will continue to smoke (of course, he won't put it all in your mouth, just put it aside). If you accept it, let him light it (if you don't accept it, put it down and go). I'm old, I haven't mixed up for a long time, and I don't know how much a cigarette represents now.