在宋代,火药被用于战争。指南针,活字印刷发明。首歌是中国封建时代的高潮。它从五代有一个很好的教训。这首歌政府认为五代的衰落导致军阀。五代高度重视在战争、武器和军队。持续的战争使国家软弱。因此,在宋代,政府开始高度重视民事官员和军方官员的数量减少。然而,在同一时期,蒙古人等少数民族在中国北方辽和金设置小国家。他们是游牧部落,擅长骑骑马和射箭。 Their countries became more and more powerful. So, they want to defeat the Song and conquered more lands. The Song Dynasty had to cope with many wars. The wars influenced economy very badly.The Song government was corrupt with the treacherous court officials.