The game is mainly for primary school grade two，corresponding the second grade seventh unit of
primary school mathematics of Human education--Number of size in 10000.Human Planet has been occupied
by devil and people is in distress.The little savior intends to defeat the devil to save terran.Replace
the elf two cards to make the card greater than the devil.Then the LORD was attacked off the blood until
he is defeated.
QD learn aims at teaching through lively activities and happy learning.
ThroughMath 
QdLearnWeight 