《史记·十二本纪·吕太后本纪》
高后因为外孙鲁元王张偃年幼，过早地失去了父母，孤零零的，势力薄弱，就封张敖前妾的两个儿子为侯，张侈封为新都侯，张寿封为乐昌侯，以此来辅助鲁元王张偃。
高后为外孙鲁元王偃年少，蚤失父母，孤弱，乃封张敖前姬两子，侈为新都侯，寿为乐昌侯，以辅鲁元王偃。
Because the Empress's grandson, the Prince of Lu Yuan, otherwise known as Zhang Yan, had lost his parents at a tender age and was an orphan without much authority, she created two former concubines of Zhang Ao as marquises, making Zhang Chi marquis of Xindu and Zhang Shou marquis of Lechang, to assist the Prince of Lu Yuan.