《太平广记·卷三百六十·妖怪二》
还有一个郑美人，李势也很宠爱，后来郑美人变成一只母老虎，把李势宠爱的妃子吃了。
复有郑美人，势亦宠之，化为雌虎，一夕食势宠姬。
There was also a beautiful woman Zheng, who Li Shi favored very much. Later, Zheng became a tiger and ate Li Shi's favorite concubine. 