So… this portrays that Khaenriah, unlike the other seven nations, once ruled by the Sovereigns (crimson moon), now ruled by Celestia and its ruler gods (darker moon), was trapped from the very beginning…?
Not to mention that no Gods were existing in Khaenriah ever ruling, not even Sovereign was mentioned there.
Something tells me Teyvat might actually be once an advanced planet, not until its fall and firstly ruled by the Sovereigns; sin upon sin.