《汉书·传·司马相如传下》
相如出使时，蜀郡年高者多数说开通西南夷没有用处，大臣也有人认为是这样的。
相如使时，蜀长老多言通西南夷之不为用，大臣亦以为然。
Xiangru said when he was on a mission, most of the older people in Shu County said that it was useless to open up the southwestern barbarians, and some ministers also thought so.