《太平广记·卷二百九十一·神一》
那老人穿一套黑衣服，拄着一根青黎杖，扣门而入。看见坐在暗处读书的刘向，老人吹了吹拐杖的顶端，竟然冒出一道火光，老人就举着拐杖为他照亮，并详说开天之前的事。
夜有老人著黑衣，植青藜之杖，扣阁而进，见向暗中独坐诵书。老人乃吹杖端，赫然火出，因以照向，具说开辟以前。
The old man was wearing a black suit, leaning on a green bamboo stick, and knocking at the door to enter. Seeing Liu Xiang reading in the dark, the old man blew the top of the stick, and a flame suddenly appeared, and the old man held the stick to light him up, and told him in detail about what happened before the opening of the sky.