Zhang Qian
The reports of Zhang Qian were put in writing in the "Shiji" ("Records of the Grand Historian") by Sima Qian in the 1st century BCE. They describe an important urban civilization of about one million people, living in walled cities under small city kings or magistrates. Daxia was an affluent country with rich markets, trading in an incredible variety of objects, coming as far as Southern China. By the time Zhang Qian visited Daxia, there was no longer a major king, and the Bactrian were suzerains to the nomadic Yuezhi, who were settled to the north of their territory beyond the Oxus (Amu Darya). Overall Zhang Qian depicted a rather sophisticated but demoralized people who were afraid of war.