No, all progress is stored on the server-side, so an account on official genshin, unofficial server a, unofficial server b, etc are all different. That said Mihoyo will still likely try to get the code repository taken down (whether that's legal or not is a big question at least in America) which is why I'm strongly recommending anyone with even a slight interest to go ahead and make a local copy of the code.
So are people able to use the modded server to unlock characters in the main server? Because if so I don't know how this would not be shut down.
No, all progress is stored on the server-side, so an account on official genshin, unofficial server a, unofficial server b, etc are all different. That said Mihoyo will still likely try to get the code repository taken down (whether that's legal or not is a big question at least in America) which is why I'm strongly recommending anyone with even a slight interest to go ahead and make a local copy of the code.
I doubt it, as that data would be stored on the server along with items.
Otherwise you would be able to inject in the client side to say “bro I own everything. “
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