ich ang ▁Emperor ▁died ▁of ▁bad ▁di arr he a ▁a ▁month ▁after ▁assuming ▁office , ▁and ▁the ▁T ian qi ▁Emperor ▁succeeded ▁him . ▁Y uan ▁Y ing ta i ▁was ▁promoted ▁to ▁Military ▁Affairs ▁Commission er ▁of ▁L ia od ong ▁and ▁assumed ▁an ▁ag gress ive ▁post ure ▁towards ▁the ▁Jin . ▁Un like ▁his ▁prede cess or , ▁Y uan ▁wished ▁to ▁court ▁the ▁Mong ols ▁and ▁add ▁their ▁strength ▁to ▁the ▁M ing ▁army . ▁He ▁believed ▁that ▁with ▁the ▁Mong ols ' ▁aid , ▁not ▁only ▁would ▁they ▁be ▁able ▁to ▁protect ▁L ia od ong , ▁they ▁could ▁actually ▁in va de ▁the ▁Later ▁Jin ▁and ▁end ▁the ▁threat ▁once ▁and ▁for ▁all . ▁According ▁to ▁Y uan , ▁Mong ols ▁were ▁essentially ▁" free ▁crack ▁caval ry ." ▁While ▁some ▁fa ctions ▁were ▁highly ▁ske pt ical ▁of ▁this ▁view , ▁the ▁att raction ▁of ▁decis ive ▁action ▁won ▁out ▁in ▁the ▁end , ▁and ▁the ▁T ian qi ▁Emperor ▁dis b urs ed ▁ 3 ▁million ▁ta els ▁to ▁persu ade ▁the ▁Mong ols ▁to ▁come ▁to ▁their ▁side . ▁ ▁Cour se ▁of ▁battle ▁ ▁In ▁early ▁ 1 6 2 1 ▁the ▁Jin ▁attacked ▁the ▁L ia od ong ▁region ▁and ▁took ▁the ▁for tr ess ▁of ▁F eng j ib ao ▁near ▁Sh eny ang . ▁Nur ha ci ▁attacked ▁with ▁all ▁E ight ▁B ann ers . ▁F eng j ib ao ' s ▁commander , ▁Li ▁B ing chen