I think I get it. So 1) the computing power happens on hardware in China, but then 2) the message can, if need be, relay the message of, say, a new mined block

I think I get it. So 1) the computing power happens on hardware in China, but then 2) the message can, if need be, relay the message of, say, a new mined block to non-internet points that are able to escape The Great Firewall, then 3) outside of China it connects those messages to the internet. Is that right?