《太平广记·卷八十五·异人五》
刘与张易吹灭蜡烛上床就寝，在刘的床前烧着红红的炭火在熬药，张易没有睡熟，黑暗中他见有一人对着炉子吹火，借着火光能识别这个人的面孔，乃是原先欠钱不还的那个人，到天亮时这个人就不再见了。
刘床前炽炭烧药。易寐未熟。暗中见一人，就炉吹火。火光中识其面，乃向之市人也，迨曙不复见。
Liu and Zhang Yi blew out the candles and went to bed, the red charcoal was burning in front of Liu's bed to boil the medicine, Zhang Yi was not asleep, in the dark, he saw someone blowing on the stove, he could recognize the person's face by the firelight, it was the person who owed the money and never paid it back, this person was gone by daylight.