Northern China talks to Southern China through Japan, to the extent that they talk at all. All of China at first had one state telecom monopoly, but then some

Northern China talks to Southern China through Japan, to the extent that they talk at all. All of China at first had one state telecom monopoly, but then some party official set his son up with Northern China. What was left of the state monopoly won't route to it. My take on what to do about that is to set up servers in both north and south that have website mirrors, as well as a geographically-sensitive nameserver. I don't have a clue how to do the GeoDNS but surely it is a solved problem as big sites require it for load balancing.