<prompt> Qedela le nkulumo elandelayo: Ngesikhathi kubusa uWanyan Yongji, amaMongol, ngaphansi kobuholi bukaGenghis Khan, ayehlele ukuhlasela umbuso wakwaJin. AmaMongol aqala ngokuhlasela iWestern Xia, umbuso owawungaphansi koMbuso WamaJin. Lapho i-Western Xia icela usizo embusweni wakwaJin, uWanyan Yongji akazange abahloniphe; i-Western Xia yagcina inikezele kumaMongol. Ngo-1211, amaMongol aqala  <response>: ukuhlasela okukhulu kombuso wakwaJin futhi wanqoba amabutho akwaJin ezimpini ezincane. Ngenyanga yesishiyagalolunye, amaMongol avimbezela inhloko-dolobha yaseJin, iZhongdu 中都; izifunda zaseXicheng naseFengtai zaseBeijing, kodwa baphoqeleka ukuba bathathe umhlalaphansi ngenxa yokuvikela okuqinile kukaZhongdu. Ngo-1212, amaMongol ahlasela umbuso wakwaJin futhi avimbezela inhloko-dolobha yasentshonalanga yeJin, iDatong Prefecture 大同府; namuhla iDatong, esifundazweni saseShanxi. Ngawo lowo nyaka, uYelü Liuge 耶律留哥, umKhitan, wahola ukuvukela umbuso wamaJin esifundazweni saseJilin. Le nhlangano yezihlubuki yazuza izinkulungwane zabalandeli ezinyangeni ezimbalwa. U-Yelu Liuge wanikezela kumaMongol futhi wahola amavukelambuso ekunqobeni ibutho lamaJin elinabantu abangu-600,000 eDijinaoer 迪吉腦兒; eduze neChangtu County yanamuhla, esifundazweni saseLiaoning. 