At first, I sewed football (graphic features were skillfully used here, but I didn't understand them), so I used regular pentagons (12 black blocks) and hexagons (20 white blocks), but later, due to the pursuit of personality and technical progress, the appearance of football also changed! For example, Adidas' latest ball for the World Cup in South Africa, Putian Celebration, only uses eight pieces of leather to be seamlessly integrated by hot melt adhesive technology (the most round football in history), which makes the ball full of personality and greatly improves its stability and controllability!