I'm going to spread my "yingxing is definitely autistic" agenda now real quick.
[disclaimer. if you reading this don't like this headcanon you can simply scroll. disagree? scroll, no need to ruin fun interpretations, characters are also meant to understand yourself deeper.]
no like ever since the dawn of time I've been saying to every friend i have "yo im so sure autistic yx (and by consequences autistic blade) IS a thing." but I couldn't explain it until now. it relates to my kin post and the points i made there.
turning yourself into your craft is NOT normal behavior blade. relating EVERYTHING back to your passion of swordsmithing aint normal blade. i SEE you.
i can SO see him being excited looking at engineering models or gadgets oh my god. once i hung out with this friend [if you're seeing this hi hi you're a nerd ^_^.] and bro was getting so excited over drills screwdrivers and such things. gen stood there and thought "bro this is such blade behavior TF."
blade would DEFINITELY have his own sets of screwdrivers or whatever the fuck. bro definitely collects diff types of engineering projects. hangs them on the wall for everyone to see.
and not to mention how blade shut himself down completely after jingliu's work on him. well obviously so one would say but like, i see him also being more sensitive to his senses not going to lie. like, probably gets fuzzy about cold and stuff.
also imagine romancing someone with your special interest (dan feng.) like bro genuinely romanced him up while obsessing on his work let me tell you.
one headcanon i have now is that blade can't handle spicy. that'd be so funny specially since he grew up on the zhuming. he'd SO get defensive on it too like "you long life species are used to this type of flavour." or smth idek. i just know that he does NOT eat spicy...
picky eater blade would be gen funny to see but I don't really believe he was much of a picky eater tbh.
if i get any more autistic proof of him im going to post more.