Wei Wuxian's eyes widen a bit when Lan Yue suddenly says that," Aiyah! We don't say that. You don't ever say everyday means everyday. That's for me and A-die only." The fact that their daughter had even said that has him trying not to blush. That just... how did they learn that? He definitely hadn't taught their daughters that.
"Don't look at me like that, Lan Zhan," he says trying not to blush.