There is no any way for us single hero to save this world .
At fact , this world needn't any hero appear out to save itself . Because it is a nature world .
So we say , not save world , but we say: we need to save or protect the good-level civilization system .
Civilization appears out from the wild nature becuase of its' good mind heart .So it is precious for us everyone .
But we will be carefully to analysis why a civilization systerm be precious ,after thinking, we slowly get know the reason is the good-rules inside of it for every joiner to make their pretty-dream come true .
So , in this talking way , we can save world through clearly decide some good rules by our honest .