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A manhole exploded after a boy put lit fireworks over the seal, igniting trapped methane from the sewer in a city in northern China.



The dramatic video, filmed in Chifeng City in Inner Mongolia on January 30, shows a boy trying to put some lit fireworks through the manhole cover and it violently exploding.



White smoke can be seen bursting out of the manhole while the cover and the bricks around it are sent flying, leaving a smoking hole in the ground.



The scared boy, seemingly unhurt, runs away immediately and shouts: "Mum, I am so scared."



According to the police, the methane from the sewer met the flames on the firework causing the explosion.



Three vehicles were damaged, but no one was injured.

A well exploded after a boy put the fireworks on the top of the cover in northern China.