In China ,there is very famous building in the world .
It is the longest wall in the world !!
That is --- The Great Wall!!
In anicient time ,the gerat wall play a importent role ,to resist xiong nu attacck the people !
Now the great wall become a place of tourist !
Every years there have many people to come to see the great wall!
Just like common saying:If you don't go to the great wall,you aren't the bawcock!!
