1. Select high-quality materials, smooth edges and corners, no burrs 2. Aim at the hole to launch, the chess piece will pierce the hole, and occupy the opponent's territory 3. Repeat the test and choose a rubber band with moderate elasticity 4. Material: wood 5. Ability development: interactive toys, parent-child communication 6. Size: 22 x 35 x 2.3CM 7. Weight: 400g
