A firework's breaks may also contain sound ... The main fuse simultaneously lights two secondary fuses—a fast-acting side fuse that ignites the lift charge, and a time-delay fuse buried inside ...

time-delay fuse, bursting charge, and other essential ingredients. Here, put on the pyrotechnician's hat and see a typical firework from the inside out.

More than 1,000 drones join in a firework show at Sky Theater in Liuyang ... to using environmentally friendly materials for the fuse covers and casings," said an executive of a local company ...