Children's educational puzzle engineering rail car, freely splicing tracks, automatically driving around the track, unlocking fun gameplay

1. Puzzle rail car, free to piece together to create a variety of sliding track modes

2. DIY building is fun and allows you to express your creativity freely 

3. Automatically driving around the track, fun and enlightening children's imagination 

4. Rounded corners, smooth and burr-free, smooth to the touch and not hurting children's hands