《北史·列传·卷七》
元愉在徐州时曾纳了一个小妾李氏，本性杨，是东郡人，元愉在夜间听到她唱的歌，很喜欢，因而受到宠幸。
愉在徐州纳妾李氏，本姓杨，东郡人，夜闻其歌，悦之，遂被宠嬖。
While Yuan Yu was in the city of Xu, he once took a concubine named Ms. Li, whose nature was Yang, and who was from Dongjun. When Yuan Yu heard her singing at night, he liked it very much, and so she was treated with favor.