Combining patterns together can either be done by referring to drawings or independently, which can cultivate children's observational and analytical abilities.

1. Thickened white card spliced pieces, high toughness and good bending resistance; 2. The surface of the spliced pieces is treated with embossing, smooth and free of burrs. 3. Double-sided printing, with high-definition patterns on the front and digital printing on the back. 4. Attach 1:1 high-definition drawings; 5. Tin box packaging for convenient storage; 6. The surface of the iron box is treated with a combination of embossing and printing processes, providing a better hand feel.