At this time Chief Clerk Ban Chao brought the troops of several kingdoms to attack Suoju (Yarkand). He soundly defeated Suoju (Yarkand) so it submitted to Han." In 90 CE the Yuezhi or Kushans invaded the region with an army of reportedly 70,000 men, under their Viceroy, Xian, but they were forced to withdraw without a battle after Ban Chao instigated a "burnt earth" policy. After the Yuanchu period (114-120 CE), when the Yuezhi or Kushans placed a hostage prince on the throne of Kashgar: "... Suoju [Yarkand] followed by resisting Yutian [Khotan], and put themselves under Shule [Kashgar]. Thus Shule [Kashgar], became powerful and a rival to Qiuci [Kucha] and Yutian [Khotan]." "In the second Yongjian year [127 CE] of the reign of Emperor Shun, [Ban] Yong once again attacked and subdued Yanqi [Karashahr]; and then Qiuci [Kucha], Shule [Kashgar], Yutian [Khotan], Suoju [Yarkand], and other kingdoms, seventeen altogether, came to submit. Following this, the Wusun [Ili River Basin and Issyk Kul], and the countries of the Congling [Pamir Mountains], put an end to their disruptions to communications with the west." In 130 CE, Yarkand, along with Ferghana and Kashgar, sent tribute and offerings to the Chinese Emperor. Later history There is very little information on Yarkant's history for many centuries, apart from a couple of brief references in Tang dynasty (618-907) histories and it appears to have been of less note than the oasis of Kharghalik (see Yecheng and Yecheng County) to its south. It was possibly captured by the Muslims soon after they subdued Kashgar in the early 10/11th century. The area became the main base in the region for Chagatai Khan (died 1241), who inherited Kashgaria (and also much of the land between the Oxus (Amu Darya) and Jaxartes (Syr Darya) rivers) after his father, Genghis Khan, died in 1227. Marco Polo described Yarkant in 1273, but said only that this "province" (of Kublai Khan's nephew, Kaidu, d. 1301) was, "five days' journey in extent. The inhabitants follow the law of Mahomet, and there are also some Nestorian Christians. They are subject to the Great Khan's nephew. It is amply stocked with the means of life, especially cotton." At the end of the 16th century Yarkant was incorporated into the Khanate of Kashgar and became its capital. The Jesuit Benedict Göez, who sought a route from the Mughal Empire to Cathay (which, according to his superiors,