Let children play in learning, play in middle school, develop left and right brains, play, answer questions and paint with children, improve children's listening and understanding ability, exercise children's observation ability and concentration, use their brains to think about problems, and guide children to learn to think actively and judge. Comfortable user experience angle, fine workmanship, durable material, portable handle design, key track operation, multi-speed volume adjustment; The body pattern adopts the thermal transfer process, and the details are handled skillfully. It adopts safe ABS material without silk screen printing and oil injection, which is non-toxic and harmless to children. The fuselage is drop-proof and durable. The paper jam can be replaced, and the number of questions can be set in stages by age, which is more practical.