Why do fortune tellers play cards?

I remember CCTV reported it. Mr. Wang sticks a tiny grain of rice on his finger, then sticks it on a card, and the bird will catch it. This was done by those swindlers.

Another is to train birds to stick rice grains on many cards, and then the birds will gradually get familiar with these cards. So birds are usually released, so choose the card immediately.

This is the skill of fortune telling. He may ask your animal sign first, and then instruct the bird to pick it up. The second is that fortune tellers will guess your approximate age. In CCTV, fortune tellers knew that the old man was born when he saw him wearing a red belt.

I've seen the kind that doesn't shuffle. What will happen in life?