Fortune teller chooses surname _ Fortune teller calculates surname

You can work out your last name without asking a fortune teller. What happened?

Deception. He gives you a choice. There are only six surnames in the grid you selected, five of which have already appeared in the previous grid. Only your last name appears for the first time. This is not easy to choose! I saw that I didn't ask if I knew my last name, so I went over and asked him my last name. He asked me to choose, and I said choose your head. You said don't ask, let me choose and I will ask! He has nothing to say.