Kim Song Hui scored three times on Sunday as North Korea hammered China 5-0 in the final of the world under-20 women's soccer championship.

The pitch turned into a swamp after torrential rain and was badly cut up because of the earlier game - where Brazil beat the US 1-0 in a penalty shootout to claim third place.

Jo Yun Mi and Kil Son Hui also scoreds for the Koreans.