《汉书·传·西域传下》
西到尉犁二百四十里，西北到焉耆一百六十里，西到危须二百六十里，东南与鄯善、且末相接。
西至尉犁二百四十里，西北至焉耆百六十里，西至危须二百六十里，东南与鄯善、且末接。
West to Weili, two hundred and forty miles; northwest to Yanqi, one hundred and sixty miles; west to Weixu, two hundred and sixty miles; southeast to Shanshan and Qiemo, which are connected.