mparthur:
So from the very little I understood, Wuji is working under Huanyu's orders. And he told Wuji that GSJ was coveting the SW position? Something about how the more the remaining gong brother fought the better his plan worked? So he got Wuji to help him by somehow linking it to helping GZY? I'm definitely not understanding this all the way but that's what I got from it.
So, the mei tag being in the housekeeper's place was his doing via Wuji. He used the grass thing to revive himself and the reason Wuji started acting after 20 years is because of him. So she isn't working for Wufeng. She's working for Huanyu.