Li Huaixian
... that the state of Yan ended when its general Li Huaixian turned against its emperor Shi Chaoyi and forced him to commit suicide?
... that the state of <a class="mw-redirect" href="./Yan_(Anshi)" id="mwF2A" rel="mw:WikiLink" title="Yan (Anshi)">Yan</a> ended when its general <b id="mwF2E"><a href="./Li_Huaixian" id="mwF2I" rel="mw:WikiLink" title="Li Huaixian">Li Huaixian</a></b> turned against its emperor <a href="./Shi_Chaoyi" id="mwF2M" rel="mw:WikiLink" title="Shi Chaoyi">Shi Chaoyi</a> and forced him to commit suicide?