1Develop children's ability to think and solve problems, exercise their logical thinking skills. 2Different shapes of blocks and bright color, cultivate children's color awareness and spatial perception. 3Adopts quality wood material, hard texture, not easy to deform. 4Water-based paint coloring, odorless and not irritating, not easy to fade. 5Carefully polished, slick and delicate, no burrs and it won't hurt children's hands.