Lemmy is unblocked in China, at least various instances are. And https is meaningless, they don't care what particular content you access, as long as the website itself hosts potentially controversial content, you're on the hook regardless. A mere DNS resolve to a domain they don't want you to see is all it takes.
There's a lack of warning about DOXXING, including self-DOXXing. Use a different Lemmy identity on different servers. DOXXing is easy when you DOXX yourself through a combination of interests in French, Hair Extensions, Ningbo, Physics, Quebec, Rabbits, Scuba and Vegetarian.