I'm not aware that Cathay has any opposition to the Elders outside of having some Sartanian nobles who obviously don't want the Elders to spread in Cathay. But the war didn't impact them - none of the regions we took had temples to the Elders. Haul had peasants who worshiped them but no temples.
Well, it did at the start of the war -- but Sorraine burned it down (along with one in Razrpot). Which is a large part of why Morgan wants Sorraine destroyed.
