Yutian

(We can also use Zhang Qian’s report to fill in more on our map of the Tarim Basin itself. Just west of the stay-behinds lived some people the envoy called the Yumi, then came the Yutian, and beyond the Yutian came the watershed we call the Pamirs, for “west of Yutian, all the rivers flow west and empty into the Western Sea, but east of there they flow eastward into the Salt Swamp.” Yutian thus can only be the west end of the Tarim Basin.)