Wooden small train toy, with hidden magnets inside the front and carriage, can be easily assembled into an extra long train without turning around or detaching. The scene is rich, with straight tracks, curved tracks, sloping tracks, forked tracks, bridges, tunnels, station buildings, signal lights, dolls and other accessories, which can create themes such as cities, forests, mines, etc. Educational value: planning railway layout, cultivating three-dimensional thinking; Track gap → Train stops, children independently discover problems and correct them; Multi person division of labor construction, learning rotation and communication. Urban express: elevated bridge+straight track+platform, simulating high-speed rail commuting. Forest exploration: Slope track+tunnel+animal carriage, telling the story of transporting wood.