However , a flood of the Yellow River , coupled with Mongol attacks , eventually forced the Song to withdraw .
Taking advantage of this , the Song army briefly recaptured their lost territory south of the Yellow River as the Mongols withdrew .
A flood of the Yellow River , coupled with Mongol attacks , eventually forced the Song to withdraw .
Taking advantage of this , the Song army briefly recaptured their lost territory south of the Yellow River as the Mongols withdrew .