In December 1639, Hung Taiji sent another large force to the Amur. This force penetrated deep into Solon territory, reaching the Kumara River. The Battle of Gualar was fought between 2 Manchu regiments and a detachment of 500 Solons and Daurs led by Bombogor.
Although Bombogor continued his resistance he was losing support, the Evenks were no match for the powerful Manchu armies and many Solons switched their allegiance to the Manchu Khan.
In August 1640 Hung Taiji sent general Xiteku against Bombogor. The latter fled to Mongolia, but Xiteku caught up with him in the vicinity of Qiluotai, capturing his baggage train, wives and children. Bombogor was captured and taken to Mukden where he was executed. With Bombogor's death Evenk resistance collapsed and the Manchu secured control of the Amur peoples. The Evenks and other local peoples were absorbed into the Eight Banners.
- USSR Academy of Sciences 1983, p.82-83
- А.М.Пастухов (A.M. Pastukhov) К вопросу о характере укреплений поселков приамурских племен середины XVII века и значении нанайского термина «гасян» (Regarding the fortification techniques used in the settlements of the Amur Valley tribes in the mid-17th century, and the meaning of the Nanai word "гасян" (gasyan)) (Russian)
- Kyle Crossley 2002, p.196
- Peterson 2002, p.317
- USSR Academy of Sciences (1983). Manzhou rule in China. Progress Publishers.
- Kyle Crossley, Pamela (2002). A Translucent Mirror: History and Identity in Qing Imperial Ideology. University of California Press. ISBN 978-0-520-23424-6.
- Peterson, Willard J. (2002). The Cambridge History of China. Volume 9. Cambridge University Press. ISBN 978-0-521-24334-6.