Outside a popular stationary and toy store, a bunch of kids were lining up, jostling, and screaming. What was it about?
It turns out to be a competition of 爆旋陀螺. In the old days, we spin the 陀螺 with a piece of string, to see whose 陀螺 can spin for the longest time. The modern game relies on a mechanical device to spin the 陀螺. And seems to be more about bumping and killing the others.