 Complete the following phrase:  Amursanaa returned to Dzungaria with his 500 warriors as he was deceived in his hope to take the Dzungar throne with the support of the Qing Empire. A faction of the Oirat aristocrats elevated him as Khan of the Oirats in 1756. However, Amursanas followers lacked unity. The decisive battle took place at Sharbal in 1757 when 3,000 Oirat troops fought against a four times outnumbering enemy. After the 17-day battle, Amursana was defeated and fled to Tobolsk in Russia where he died but the Dzungars continued their war against Manchu invasion until 1758. Brutally revenging the Oirat people for their love for freedom, the Qing army carried out the 