1. Bend a marked card and put it at the bottom of the whole deck
2. Spread out the cards and ask the audience to choose one, and put the selected card under the marked card
3. Wash the cards briefly, but of course, you can't separate the marked card from the cards selected by the audience! Hold the bottom with your fingers. (numbers and patterns should be presented to the audience) Insert the pencil through the envelope
5. When the pencil rotates counterclockwise, the cards selected by the audience naturally rise to prepare props: a pair of Parker cards, an envelope, a pencil or bamboo chopsticks, and a rubber band. First, put the whole set of cards into the envelope and measure the center line of the cards when they stand upright. Cut holes for inserting pencils on both sides of the envelope, and wrap the rubber band around the center line of the pencil. Cut holes for inserting pencils on both sides of the envelope, and wrap a rubber band around the middle of the pencil. Magic trick: when putting the card into the envelope, when inserting the pencil, be sure to insert it in front of the bent sign. Only in this way can the cards selected by the audience be transferred smoothly.