 The wars engendered an era of technological , cultural , and demographic changes in China . Battles between the Song and Jin brought about the introduction of various gunpowder weapons . The siege of De 'an in 1132 was the first recorded appearance of the fire lance , an early ancestor of firearms . There were also reports of battles fought with primitive gunpowder bombs like the incendiary huopao or the exploding tiehuopao , incendiary arrows , and other related weapons . In northern China , the Jurchen tribes were the ruling minority of an empire that was predominantly inhabited by former subjects of the Northern Song . Jurchen migrants settled in the conquered territories and assimilated with the local culture . The Jin government instituted a centralized imperial bureaucracy modeled on previous Chinese dynasties , basing their legitimacy on Confucian philosophy . Song refugees from the north resettled in southern China . The north was the cultural center of China , and its conquest by the Jin diminished the international stature of the Song dynasty . The Southern Song , however , quickly returned to economic prosperity , and trade with the Jin was lucrative despite decades of warfare . The capital of the Southern Song , Hangzhou , expanded into a major city for commerce . 
 The wars engendered an era of technological , cultural , and demographic changes in China . Battles between the Song and Jin brought about the introduction of various gunpowder weapons . The siege of De 'an in 1132 was the first recorded appearance of the fire lance , an early ancestor of firearms . <a href='dey_it' title='1'><mark>There</mark></a> <a href='uninflect' title='2'><mark>were</mark></a> also reports of battles fought with primitive gunpowder bombs like the incendiary huopao or the exploding tiehuopao , incendiary arrows , and other related weapons . In northern China , the Jurchen tribes <a href='uninflect' title='3'><mark>were</mark></a> the ruling minority of an empire <a href='null_relcl' title='4'><mark>that</mark></a>was predominantly inhabited by former subjects of the Northern Song . Jurchen migrants settled in the conquered territories and assimilated with the local culture . The Jin government instituted a centralized imperial bureaucracy modeled on previous Chinese dynasties , basing their legitimacy on Confucian philosophy . Song refugees from the north resettled in southern China . The north was the cultural center of China , and its conquest by the Jin diminished the international stature of the Song dynasty . The Southern Song , however , quickly returned to economic prosperity , and trade with the Jin was lucrative despite decades of warfare . The capital of the Southern Song , Hangzhou , expanded into a major city for commerce . 
Da wars engendered an era of technological , cultural , and demographic changes in China . Battles between tdaSong and Jin brought abt the introduction of various gunpowder weapons . The siege of De 'an in 1132 was the first recorded appearance of the fire lance , an early ancestor of firearms . It was also reports of battles fought w/ primitive gunpowder bombs like thdancendiary huopao or the exploding tiehuopao , incendiary arrows , and other related weapons . In northern China , the Jurchen tribes was thedaling minority of an empire was predominantly inhabited by former subjects of the Northern Song . Jurchen migrants settled in the conquered territories and assimilated with the local culture . The Jin government instituted a centralized imperial bureaucracy modeled on previous Chinese dynasties , basing their legitimacy on Confucian philosophy . Song refugees from the north resettled in southern China . The dath was the cultural center of China , and its conquest by the Jin diminished the idarnational stature of the Song dynasty . The Southern Song , however , quickly returned to economic prosperity , and trade with the Jin was lucrative despite decades of warfare . The capital of the Southern Song , Hangzhou , expanded into a major city for commerce .