 Empress Yang initially refused to cooperate, but when Shi Miyuan threatened to have the entire Yang clan massacred, she agreed to fabricate the edict which installed Zhao Yun on the throne who reigned as Emperor Lizong.In gratitude for giving him the throne, Emperor Lizong invited her to reign as his co-regent behind a lowered screen.She accepted the offer and ruled jointly with him until her death in 1233, eight years later.