The shells are left to dry before being sent all over the world.And here is a finished firework.Now the factory has to make sure that these definitely workand the only true way of doing that is to let them off.And it is nearly dark.I'm joined by Dancing factory's General Manager, Eva Chung for an hour's quality control.Just a perk of her job.Every evening, the hills of Liuyang are alive with the sound of fireworksthat each factory detonates its latest designs.Seeing your fireworks in the sky, how does that make you feel?I am so proud of it. It's my father's business and also our family business.We made it from nothing. And we light the night sky.