《宋书·志·卷二十八》
元嘉二十五年五月戊戌曰，黑龙出现于玄逮湖东北角，扬州野吏张立之上报朝廷。
元嘉二十五年五月戊戌，黑龙见玄武湖东北隈，扬州野吏张立之以闻。
On the Wuxu day of May in the 25th year of Yuanjia, a black dragon appeared in the northeast corner of Xuande Lake, and Zhang Li, the official of Yangzhou Yeshi, reported to the court.