We in China use tor mainly for avoiding Great Fire Wall, which is a very strong internet censorship software operated by the government. So, if linkage with nodes within China is completely useless for us to break the censorship. Usually, we can cut off such connection in tor's graphic window vidalia manually, but it very bothering, we must keep an eye on whether there is linkage within China. I wonder if there is some way to remove nodes located in China.
If someone knows how to do, plz tell me, Thanks!!!