1. First, two playing cards face each other to form an A-shaped triangular column. The interval between two playing cards should not be too big or too small, and it should be stable.
2. According to this method, build two A-shaped triangular columns beside it.
3. Put two playing cards on the sharp corners of three A-shaped pillars.
4. Then build two A-shaped pillars on the placed playing cards. Put a playing card on two A-shaped pillars.
5. finally, put an a-pillar on it.
6. The process of stacking high cards is completed.