As you travel to sumeru, a voice of a language unknown to Teyvat. But to you it seemed familiar. Delving further into the shade lies a brooding lady with long ears on a chair beside what seems to be a collection of magical rings.

septem anulos archos mortalia campos, undecim potentibus mortalibus moriturum, Una in tenebris dominae sedibus in tenebris, In terris inferis, ubi praeteritae umbrae iacent. She says in a form of abyss speech that sounds more foul than it already is. She then looks at you

So you cast yourself unto the renowned master of the tongues and casting of rings? Well I suppose traveling with someone I'm too familiar with millennia ago is not too far off.