this one is a bit out of order, and I have not been good at finishing the detailed blogs, I have not forgotten, I will get back here to complete the task.
When I was in Gui Lin, I had great trouble with the stability of the links. There was never this problem anywhere else in china, though it did occur to a lesser extent in HK. Basically the TCP links would be reset. At the time I just though that it was due to overloaded links, but then I read that Comcast in the USA was doing this to peer to peer links. I wonder if the chinese were doing the same?