 Nevertheless, the Kangju continued to send embassies to the Han court and pursued an independent policy, which they were able to maintain until the 3rd century AD.Evidence of Kangju independence can be seen in the coinage issued in the 2nd and 3rd centuries AD, during which they issued their own currency which was similar to that of Khwarezm.The biography of the Chinese General Ban Chao in the "Hou Hanshu" says in 94 CE that the Yuezhi were arranging a marriage of their king with a Kangju princess.