A very strange poker magic! I still don't know how it changed. ...

Do you still have a deck of cards in your pocket?

They are all arranged in order in advance, and different suits are in different positions. Just remember the order of the cards, and then you gradually narrow it down ... is it easy to find them?

If so, he looks at the last card first, and then lets you choose the suit. For example, the card he looks at is heart-shaped. If you choose spades and clubs first, he will delete your choice and ask if you are heart-shaped or diamonds. Just like the following person said, but he won't directly say what he doesn't want, but quietly. Without your consent, he won't directly say the range of cards he sees. This is just my own idea for reference. ...