Here s what the Histories say on the Qiang I did a little snooping around and found additional information on the Qiang people The information below comes from Chinese histories i e the Book of Later Han and Zizhi Tongjian Apparently the Qiang people of the Hexi Corridor commanderies i e Zhangye Wuwei Jiuquan and Dunhuang were sent in 106 CE to Kashgar to relieve a siege against Ren Shang who was then the head of Han s Protectorate of the Western Regions The siege was lifted by the time the Qiang arrived However these Qiang troops led by Liang Qin were sent to garrison a city in the oasis state of Kucha So yes anonymous IP the Qiang WERE SENT to the Tarim Basin In fact after Liang Qin and his Qiang troops entered Kucha the inhabitants rebelled against them a rebellion which the Qiang under Liang s command were charged with quelling Now as for the Qiang people who rebelled in the Hexi Corridor in 107 CE they were actually a different group of Qiang people from Jincheng Longxi and Hanyang commanderies in what is now southeast Gansu province This group of Qiang people were supposed to reinforce the Protector General Duan Xi as he pulled out of the Tarim Basin Just as Rafe de Crespigny asserts these Qiang were uncertain about how long they would have to serve in the Tarim Basin so they rebelled against Han to avoid serving as conscripts Afterwards Liang Qin and his Qiang troops returning from the Tarim Basin fought these rebelling Qiang people from Jincheng Longxi and Hanyang and defeated them Liang Qin s forces killed some eight to ten thousand of them Thus your assertion about Qiang fighting Qiang is not incorrect but you are entirely incorrect about the reason WHY this group of Qiang decided to rebel An assertion of Crespigny s that you rejected even though he is a respected sinologist and you are some random guy using a bunch of public computers in Singapore that s right I check IP addresses Anyways here s my evidence Zizhi Tongjian chapter 49 AD 106 AD 107 AD 108 Hou Han Shu chapter 47 biography of Liang Qin Hou Han Shu chapter 87 on the Western Qiang I believe this settles it once and for all And I believe you owe me a huge apology for suggesting that I should crawl away instead quoting useless stuffs here that don t matter at all Yeah right Quoting useless stuff like Rafe de Crespigny and Yu Ying shih If that s not good enough for you here are the original sources they used