Faxian's long overland and sea pilgrimage
In 399 the elderly monk Faxian left Chang'an with companions because China's copies of the monastic discipline (Vinaya) were incomplete, and crossed the Taklamakan, where he wrote that dried bones of the dead marked the route, and then the Pamirs. His companion Huijing later froze to death crossing the Little Snowy Mountains south of Nagara. Faxian spent years copying texts in India and Ceylon and returned home by sea without his original companions, at heavy cost in time and lives.