My grand son loves this, but the bridge keeps falling down

My grandson likes it very much.
When it arrived, I was overwhelmed by the number of parts, but it was easy to assemble.
Also, since it is made by combining parts, it can be bent into various shapes, which is very good.
In addition, even if you step on the parts and break them, if you remove only the broken parts, you can use them and it is economical.

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Самодельная электрическая игрушечная машинка на дорожке, инженерная машина, обучающая игрушка для детей, маленький поезд