Much as I despise this company and everything they’ve done, Khitai storyline is objectively cool and good and worthy of knowing, at least in summary. So here’s a write up of what’s been going on as I remember from playing comprehensively back in the day. Watch out for massive massive spoilers, obviously, if you care about that sort of thing.
-Yig is a planet of alien elephant giant things and a stupid amount of technology that is indistinguishable from magic.
-Yag Kosha starts a war, he loses and has to flee the planet.
-A hunter entity is sent to track him on a spaceship and follows all the way to Earth.
-The Entity’s ship crashes into Karakorum, possibly after YK shoots it down, don’t remember exactly, and YK beats it up and buries it and its spaceship under a mountain.
-YK teaches the native monkey beasts about “good magic” and is worshipped as a god.
-YK buggers off to see the world, somehow gets trapped in Tower of the Elephant by an evil wizard after a few millenia.
-A young thief breaks into the tower and frees YK from imprisonment by killing him.
-When YK dies, the Entity is partially freed and the mountain he was imprisoned under explodes.
-Magic floods Earth, causing all those hundreds of thousands of spellcaster enemies and players all over AoC to exist. Which was %100 ludicrous if you knew a single thing at all about Conan canon, so that’s a pro retcon and one of the smartest things they came up with (like 5 years after the fact but still).
-An army of mutant critters bursts forth from the crater, Khitan armies get rekt (causing their influence in the empire to slowly dwindle to almost nothing in the following decades), Khitan wizards newly empowered by all that magic win, granting a whole load of prestige and influence to Scarlet Circle. Particularly to the head wizard Yah Chieng, who happened to be the vizier to the Emperor.
-The vizier turns out to be evil, because of course he is, and usurps the Emperor, because of course he does, and becomes the new God Emperor of Khitai.
-God Emperor finds the Entity in the crater and has it brought to Paikang for “study”. But since all the alien ■■■■ is radioactive, the crater and Emperor’s palace become ground zero for the space cancer epidemic and it starts spreading everywhere. Khitans being a cowardly and superstitious lot (not to mention very unimaginative) begin to call space cancer “corruption”.
-After a few decades, Children of Yag Kosha learn the dude that killed their god is named Conan and are mad and send assassins to kill him.
-There’s actually a whole mess of conspiracies going on behind the scenes with some people (like the new leader of Shadows of Jade and the old emperor’s daughter who’d secretly been taken in by Yellow Priests of Yun) actually wanting to just bait Conan into coming over and toppling the evil emperor like he did to old Aquilonian king and bla bla, but don’t mind that.
-YK’s Assassins fail (of course) and a clueless Conan sends his BFF the Liberator of Tortage to Khitai to find out what these foreign ■■■■■■■■ want from him.
-The protagonist comes to Khitai, kicks ■■■ and takes names, joins some groups, eventually topples the Emperor and destroys the Entity inside Jade Citadel.
This is the very abridged version but it should tide you over.