Song for the Lilies [Intellectual Property Study]

I have been absolutely addicted to Genshin Impact recently (I'm very late to this fanbase) and wanted to do a piece featuring one of my favorite storyline quests - Zhongli asking Lumine to sing to help the Glaze Lily's bloom.

Is he looking at Lumine with peaked interest? Or is he looking at the Glaze Lily remembering a long lost love?