《太平广记·卷一百四十一·征应七》
晋朝时信安的郑微，少年时见到一个老头，把一只口袋送给郑微说： 这是你的命，要特别小心不要散失，如果破碎了就是不好的他觉得很神秘，即使是家人也不知道这件事。
言讫，失所在。后密开看，是一梃炭。意甚秘之，虽家人不知也。
Zheng Wei of Xin'an during the Jin Dynasty met an old man when he was a teenager and gave Zheng Wei a pocket, saying: This is your life, and you must be especially careful not to lose it. If it breaks, it will not be good. He felt very mysterious, even his family didn't know about it.