Sky lantern

A sky lantern, also known as Kongming lantern or Chinese lantern, is a small hot air balloon made of paper, with an opening at the bottom where a small fire is suspended.

In Asia and elsewhere around the world, sky lanterns have been traditionally made for centuries, to be launched for play or as part of long-established festivities. Sky lanterns have also been referred to as sky candles or fire balloons. He is said to have used a message written on a sky lantern to summon help on an occasion when he was surrounded by enemy troops.