A fellow ML, obviously, preferably a fellow Chinese one (I am very cultural. In the past few weeks I have read nothing except works of Lao She and histories of Beiyang Warlords). This might sound kind of weird, but I'd also like to have someone who would want to be taken care of (this is probably because pretty much everybody is my superior irl). As for preferences in entertainment, food and stuff, I don't feel like that would really affect my decision, although I do want children.

edit: this is assuming I do eventually find a partner, which currently looks like a pretty bleak prospect.