《资治通鉴·宋纪·宋纪十四》
武帝刘裕创业时，盔甲上都生虮虱，辛苦开辟疆域，可是，后代子孙，每天几乎都要丧失百里之地。
高祖虮虱生介胄，经启疆场；后之子孙，日蹙百里。
When Emperor Wu of Song, Liu Yu was just starting out, his helmet was filled with lice. He worked hard to expand his territory, but his descendants lost almost a hundred li of land every day.