1. Cut out paper strips with the width of 1 cm along the length direction on different colors of paper. As the picture shows, four colors of paper strips are used in the demonstration: red, yellow, blue and green.

2. Take two pieces of paper at will, which are green and red in the presentation. Overlap one end of them so that they are perpendicular to each other and stick together. The red paper is under the green paper.

3. Next to the red paper, stick a blue paper, which is also perpendicular to the green paper, but above the green paper.

4. Next to the green paper, paste the yellow paper, which should be perpendicular to the red paper and under the blue paper.

Now fold the leftmost red note inward until it is perpendicular to the blue note and next to the yellow note.

6. Fold the rightmost green paper strip inward, perpendicular to the yellow paper strip and side by side with the blue paper strip.

7. Then pull out the yellow note and put it on the green note. Continue to fold the leftmost blue paper strip inward until it is perpendicular to the green paper strip. Fold the yellow paper on the far right back inward until it is perpendicular to the red paper, then pull out the yellow paper and put it above the blue paper.

8. In the same way, weave the leftmost green note. The rightmost red note should also be folded backward and inward, woven under the blue note and above the green note. Repeat the above steps and reciprocate left and right until the banknotes are used up. The note on the left has been folded directly inward, and the note on the right has been folded backwards and inward except for the first time. When knitting, follow the law of one up and one down.

9. When the end is near, every time you weave, stick the note and fix it to ensure that the end will not spread. Finally, use scissors to cut off the excess parts and make them into beautiful right angles. A bookmark made of a beautiful piece of paper is ready.