Genshin Impact update patch 2.0 adds 5-Star Inazuma Artifacts Shimenawa’s Reminiscence and Emblem of Severed Fate to the game. These can be farmed at Momiji Dyed Court Domain.
How to Unlock
You don’t really need to do anything to unlock this new domain. You just have to go to its location and activate the Domain’s waypoint.
The Domain can be found on Yashiori Island located far West of Inazuma City (See Above).