He's curious what 'huge' means but the likelihood that their worlds share something as specific as forms of measurement is unlikely. It sounds like Andarna is roughly the size of a small vishap though. It gives him some context at least.
"Curious that they all have an affinity for fire.
And... yes," He answers reluctantly, "There are very few beings who would be considered dragons in Teyvat. Once they were plentiful, but no longer. I know of only a few dragons aside from myself. Of those, none are fire. But yes, there are one or two dragons of other elements who yet live - geo, anemo, dendro. Much more plentiful are what we call vishaps. They are young but could one day evolve into a true dragon. They are prevalent in many elements. I believe we would call both of your dragons vishaps. Certainly, Andarna, though I'm unsure about Tairn."
no subject
"Curious that they all have an affinity for fire.
And... yes," He answers reluctantly, "There are very few beings who would be considered dragons in Teyvat. Once they were plentiful, but no longer. I know of only a few dragons aside from myself. Of those, none are fire. But yes, there are one or two dragons of other elements who yet live - geo, anemo, dendro. Much more plentiful are what we call vishaps. They are young but could one day evolve into a true dragon. They are prevalent in many elements. I believe we would call both of your dragons vishaps. Certainly, Andarna, though I'm unsure about Tairn."