Excerpt-
One of the biggest oases in the region west of the Yellow River was Liangzhou, the capital of several short-lived dynasties set up by nomads as well as the
Chinese. It was very popular with the merchants, who had long used it as their base from which to make forays into the rest of China. Mostly they prospered. But things could go wrong. In the early fourth century AD, a merchant based in Liangzhou sent a letter home to Samarkand, reporting that many of his fellow-merchants had died of starvation because of a peasant revolt and war in China, and claiming that he
himself was on the verge of death too.
The district of Anxi, or Guazhou as Xuanzang knew it. This was the oasis he came to after Liangzhou. Here he found himself in serious trouble. His horse died suddenly; the two novices who accompanied him became frightened: one left him and the other was sent back to his master for his own good. Then orders reached Guazhou to arrest him and send him back to the capital. The local governor was a pious Buddhist and after hearing the monk’s story, he tore up the warrant and urged Xuanzang to leave as quickly as possible. But Xuanzang did not know the way through the desert and he could not find anyone who dared to challenge the imperial edict and take him past the Jade Gate and the five watchtowers beyond it, the last frontier posts. Finally, after a month’s wait, the monks in the monastery
where he stayed and found Pantuo, a Sogdian merchant, who was willing to be his guide.