This summer I walked main Newbury street (one of main shopping street in Boston) and parked on it was a sweet, sweet looking brand new McLaren (had to go on their web site to identify from my picture, I think it was an Artura Spider) in a very classy matte-black paint, with custom license plates saying LABUBU. A very incongruous combination between what that car is and the plates it was sporting. I did not observe a labubu hanging on the rear view mirror which I expected should have been present.

First time running into a Chinese undergrad?

I don't think that is incongruous at all.