CCTV footage shows a manhole exploding after a child drops a lit firecracker into the sewer.

Children can be seen playing with fireworks near the manhole cover, when one of the group throws a lit firecracker down the manhole, triggering an explosion.

This is the second manhole explosion caused by a firecracker in China this week, with a boy thrown into the air after after trying the same stunt in Henan province a few days prior.