1. First, take a square piece of paper;

2. Fold up, down, left and right! Leave traces;

3. Take the trace as the baseline, fold all four corners inward, and then fold inward parallel to both sides;

4. Continue to fold in half according to the arrow direction;

5. Gently unfold the folded one;

6. Then fold the upper corner into the box;

7. Then turn the box around and continue to make the other side. It will be fine if it's over.