Yang Mu'er revealed the secret about Lin Zhenghui to her senior sisters because the Spirit Talismans that Lin Zhenghui had condensed weren't of much use to her anymore.
More importantly, her senior sisters' Cultivation Levels weren't very impressive, and she wanted to help strengthen them a bit by pulling them into Lin Zhenghui's camp.
That way, Lin Zhenghui wouldn't have too much energy left to pick on her.
For instance, after Lin Zhenghui returned to his dorm, he quickly ate some dinner and took Caiting and the others back to his room for some fun.
He released the unfinished business he had with Yang Mu'er on Caiting, the tall and pretty bodyguard, filling her Shuilian Cave completely.
"No way? Are you serious? Does our master know?" When they heard Yang Mu'er, they asked their spirited little junior sister in shock.
"Shh, don't be too loud, our master doesn't know yet." Yang Mu'er gestured for them to be quiet.
