Relations between Chinggis Khan and his younger brother Khasar were somewhat
strained at times. In accordance with Mongolian tradition Chinggis Khan’s brothers and
their descendants were allotted lands in the eastern part of the Mongolian Plateau. This
fact became a crucial point in the early seventeenth century when descendants of Khasar
turned rather to the resurging Manchu state than to the last Mongolian ruler Ligdan Khan.
At that time another famous Khasar’s descendant Gushi Khan crushed the remaining
supporters of Ligdan Khan in the Qinghai area and established the paramountcy of the
Gelugpa school in Tibet with his military forces. Owing to continuous intermarriages
with Manchu Qing emperors Khasar’s descendants became closely linked to the ruling
dynasty during its entire reign.