《宋书·列传·卷九十五》
如果讨厌你的国家的话，可以到平城来居住，我到扬州居住，正好换一换土地，你年岁快到五十岁了，未曾出过大门，即使靠自己的力气而来，好比三岁婴儿，又怎么知道我们鲜卑人常在马背上生活惯了的呢？
若厌其区宇者，可来平城居，我往扬州住，且可博其土地。伧人谓换易为博。彼年已五十，未尝出户，虽自力而来，如三岁婴兒，复何知我鲜卑常马背中领上生活。
If you hate your country, you can come to Pingcheng to live, and I will live in Yangzhou, just to change the land, you are almost fifty years old, you have never been out of the door, even if you come by your own strength, like a three-year-old baby, how do you know that we Xianbei people are used to living on horseback?