Assembly can be completed within 30 minutes without the need for glue, with a pure buckle and screw structure. The blade angle can be adjusted, allowing children to intuitively understand the relationship between "blade inclination angle speed energy output" through comparative experiments. Connect the small motor to light up the LED and upgrade to a "wind power station". Compatible with Lego Technic hole spacing, it can continue to expand into windmill farms or Dutch town scenes. Educational setting: Parent child play together, the living room instantly transforms into a "mini wind tunnel laboratory". In class, the teacher led the students to measure the changes in LED brightness under different wind speeds and completed the wind speed voltage curve graph.