Hello. This is the wrong section to post this. Tutorials is for posting tutorials.
Unfortunately, some ISPs and countries, including China, block domain names or IPs of sites that they think contain inappropriate content. As a free hosting service, things like this is inevitable because people abuse the service. Even though we try to stop abuse as quickly as possible, it would still be online at some point. Just one site could cause the entire IP to be blacklisted.
China probably blocked one of our server IPs, but not all of them. As a result, some x10.bz sites work (server IP is not blocked) while others don't.