From 1727 until 1912, roughly corresponding to the era of Tibet under Qing rule, the Qing Emperor appointed "imperial commissioner-resident of Tibet" (Chinese: 欽差駐藏辦事大臣). The official rank of the imperial resident is amban (Tibetan: བོད་བཞུགས་ཨམ་བན, Wylie: bod bzhugs am ban, colloquially "High Commissioner"). With increasing diplomatic contacts between the British and the Qing in from the 1890s, some assistant ambans (Chinese: 欽差駐藏幫辦大臣) were just as notable as the senior ambans. Two of them, Feng Quan and Zhao Erfeng, who were stationed in Chamdo, were both murdered, the former in the Batang uprising and the latter in Xinhai Revolution.