This is the moment a Chinese fireworks display that involves molten metal erupts into flames when sparks accidentally ignite a bunch of helium balloons being sold to the crowd. https://filedn.eu/lhVNGNsizwl5t7THnzzJ2c8/New%20public/AsiaWire-BalloonsFire-01.mp4 Hundreds of people gathered to watch the so-called "iron flower" show taking place outside a shopping centre in Guangzhou's Nansha…