I used the recommended way, that is curl https://get-ghcup.haskell.org -sSf | sh. But it takes hours to download. I am at shanghai China, First thing I thought is GREAT WALL, so I opened VPN, but the situation doesn't have any improvement. Is there something wrong?

I want to try Haskell, I think more and more Chinese developers would do. If this issue is location related, I hope there would be a solution.