Required materials: disposable wooden chopsticks, scissors, 502.

Specific steps:

1. Cut wooden chopsticks into centimeters with scissors and make them into four edges.

2. Be the central axis of the windmill.

3. Assemble the blade on the bearing, and pay attention to parallelism when pasting. It is best to add two short chopsticks next to the bearing to prevent derailment.

4. Assemble the windmill base as shown in the figure.

5. Put the windmill into the triangle at the top of the base.