Mu Yiyi
Who can compete with the mighty Gu Jingze????He never loses in front of anyone specially not in front of his darling wife & little sister!!!!!He will win by any means necessary be it by hook or by crook.😊😊😊😊😊.Just like he did it here.Maybe he wants Lu Beichen to cherish his sister instead of bickering with her that's why he mentioned the guy who's trying to woo his sister because he wanted to warn him that if he doesn't change his behavior soon he will lose her to someone else.