How can a fortune teller know your last name by looking at your palm ... how amazing!

If you can know your last name by looking at the palm of your hand, you should first consider who took you to the fortune teller and whether they all conspired to play tricks on you. If you take a foreigner, it is estimated that fortune tellers will never know again, because they don't know how to calculate English names. You're talking about cheating, not a good life.