Applicable people: no limit， girl， boy<br />Features: DIY unlimited assembly<br />Whether imported: Domestic<br />Ability: intellectual development， work skills， emotion， parent-child communication， interactive toys<br />Applicable age: young (7-14 years old)， young (15-35 years)， children (3-6 years old)<br />Color: 73 pieces of gray track， 73 sets of color track<br />