The university doesn’t have that connection so in ep 8 when he’s introducing himself as xiao-Zhao, it’s in relation to Shen Wei. It’s not an entirely inappropriate nickname - if Shen Wei is the type to go around referring to people with diminutives he might call ZYL that but this is Shen Wei. The degree of familiarity/informality ZYL is implying raises eyebrows, to say the least.
no subject
Oooh, I like that. ♥