This site is not blocked yet.
The policy looks vague, generally all website should register in an institute there with a person or a company and should have a local server. But now, some sites are blocked some are not. Generally, we will need a local server not only for better speed but also to be more legal.
But maybe it’s just because we are not large enough now…
But different area has different policy, I’m not sure if this site is accessible in Xinjiang and Tibet at the moment.