Unless they have backdoors to absolutely every form of encryption, including https certificates, etc. you can always use that to tunnel through.
https://www.reddit.com/r/privacytoolsIO/comments/cukcaf/goog...
https://www.reddit.com/r/privacytoolsIO/comments/cukcaf/goog...
I want to stress that I'm speaking from experience. I personally installed a telegram proxy project which aimed to mirror the pattern of traffic and fool the censors