How can sky lantern fly high up in the sky?
天灯为什么可以飞到天上去？
Then they lit a fire to fly the lantern.
然后他们就点燃放飞灯笼。
Sometimes, they make Kongming (Hung Ming) lanterns, which can fly because the burning candles heat the air in the lantern. The lantern rises with the heated air.
有时，他们做孔明灯，由于灯里有燃烧的蜡烛，热空气使孔明灯上升。
Sometimes, they make Kongming (Hung Ming) lanterns, which can fly because the burning candles heat the air in the lantern. The lantern rises with the heated air.
有时，他们做孔明灯，由于灯里有燃烧的蜡烛，热空气使孔明灯上升。
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