《资治通鉴·汉纪·汉纪六》
凡是匈奴送给汉朝的书信木札以及印封，其规格都增长加宽，并使用傲慢不逊的言辞，自称为： 天地所生、日月所置的匈奴大单于 。
其遗汉书牍及印封，皆令长大，倨傲其辞，自称 天地所生、日月所置匈奴大单于 。
All the letters and seals that the Xiongnu sent to the Han dynasty were larger, wider, and more arrogant in tone, and they referred to themselves as: The Great Chanyu of the Xiongnu, born of Heaven and Earth, and established by the Sun and Moon.