对学界已经形成定论的有关元朝经营西域的一系列重大事件进行了勘误，确定了火州之战的时间，重新考订了畏兀儿政权从别失八里迁都火州的时间，证明了元朝退出西域的正确时间，重新厘定了元朝前期西域的政治格局 It has done a corrigendum to a series of important events concerning the operation of the Western Regions of the Yuan Dynasty that the academia has reached a conclusion. It has determined the time of the Battle of Huizhou, re-examined the time when the Vaughan regime relocated to Huizhou from Baxi and proved that the Yuan Dynasty exited the Western Regions The correct time, redefined the political pattern of the early Western Yuan Dynasty