This is the territory of the Demon Realm Fox Clan. There is a king of the fox clan living in every palace. They are the three major families headed by the Silver Fox Supreme - Ouyang Bingling; the Nine-tailed White Fox King - Duojiake; and the Fire Fox King - Su Jinran.
On weekdays, looking down from the sky, the palace under the moonlight looks as dark as hell. I can't guess what kind of story there is. Despite the calm on the surface, wars have already been raging in the mainland - for a long time, the war has never stopped in order to compete for territory...