When it comes to his husband he knows that there's emotion there. Emotion is always in those beautiful golden eyes that he loved so much. Though when he hears the twins talk about how bofu was teaching them the dizi too... well, he didn't believe that. Lan Xichen didn't play the dizi. So the man couldn't teach the twins the dizi. He could teach them the xiao but not the dizi.
There's a part of him, like his husband, where he thought what it would've been like if they'd ended up with the juniors there. If they'd all been young. He would've even taken his little radish. That boy was his whole world. One that he'd raised up until his death and then the boy had been taken in by Lan Wangji. His husband had done a good job raising the boy.