He pauses long enough to kiss the top of Wei Ying's head as he starts to hum before resuming petting his cheek.

If nothing else, he feels certain Wei Ying would not die without hearing the entirety of the lyrics Lan Zhan had written as a teenager.

"Zhǔ yī hú shēng sǐ bēi huān jì shào nián láng," he sings, ears burning as he remembers how confused and dramatic he was. The lyrics are heartfelt, nonetheless, but he marvels sometimes that he dared to try and sing them for Wei Ying in that cave.