《太平广记·卷七十一·道术一》
葛玄就张口吐气，火苗就忽忽地从他口中喷出来了，一会儿就充满了屋子，客人全像在阳光之中，也不太热。
玄因张口吐气，赫然火出，须臾满屋，客尽得如在日中，亦不甚热。
Ge Xuan opened his mouth and breathed out, and the flames suddenly spewed out of his mouth, and in a while filled the room, the guests were all like in the sun, it was not too hot.