... paper, opp packaging, Flight altitude:500-800 meters.Burning Time: 10 ~ 12 minutesOval-shaped sky lanterns Size: 108 ... called sky lanterns, according to legend by the time of the Three Kingdoms Zhuge Kong Ming (or ... , the outside with thin white Thick surrounded the opening of paper down. For lighting off when, in ... avoid lack of oxygen flame. At the same time four weeks of the Control line must be ...