Here is a short Guide of unlocking Tartarusuna Island barrier because I had alot of issues trying to get in hopefully this helps.
I made a discord Server for Genshin related chat come and chat with me:
Didn't put tons of effort in it don't laugh at me ╰(‵□′)╯
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Guide to Unlock Domain "Shakkei Pavillion" here ! : [ Ссылка ]
My Electroculus Full Walkthrough Video ep1 is here ! : [ Ссылка ]
Episode 2:[ Ссылка ]
Episode 3:[ Ссылка ]
Ещё видео!