surname Yu
to go / to take / sentence-final interrogative particle / variant of 於|于[yu2]
in / at / to / from / by / than / out of

= + : Mnemonic symbol: prepositions are what glue the sentence together. Honey is as sticky as glue, so I'll represent 于 by a honey jar.

Yu the Great was assigned to repair the electrics of the space station's entrance, but instead she was snacking some honey from a honey jar. Now her capacitor got stuck in the honey and she has to use a crowbar to lever it out.
(of time or place) in; at; on / (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for / (indicating a source) from; out of / (used in comparison) than / (used in the passive voice) by

于 character breakdown

"vertical stroke with hook" radical in Chinese characters (Kangxi radical 6) / see also 豎鉤|竖钩[shu4 gou1]

Mnemonic symbol: 亅 looks like a crowbar. Zeus (ju) is bored and presses all the buttons next to the elevator kitchen's (e2) door with his crowbar (亅).
two / 2 / (Beijing dialect) stupid

= : Mnemonic symbol: a capacitor, because the two strokes remind me of the symbol in electrical drawings. Albert Einstein (Ø) is experimenting with a capacitor (二) in the space station's bathroom (Ø4). He finds that it's uncomfortable to discharge a capacitor using two flutes (一).

Characters with 于 as component

room / universe

= + : Yu the Great (yu) just earned her PhD in the space station (Ø3) and is proudly putting on her graduation cap (宀). She was measuring cosmic (宇) rays by investigating the traces they left in a honey jar (于) and is demonstrating her experiment for the camera.
variant of 籲|吁[yu4]

= + : Yu the Great (yu) wants to stick a mandarin (口) into a honey jar (于) and eat it, but in the space station's bathroom (Ø4) the mandarin is appealing (吁) to her to not do it.
sh / hush
to implore

= + : Yu the Great (yu) wants to stick a mandarin (口) into a honey jar (于) and eat it, but in the space station's bathroom (Ø4) the mandarin is appealing (吁) to her to not do it.
taro / Colocasia antiquorum / Colocasia esculenta
(dialect) country fair / country market
dike
variant of 污 / dirty / filthy / foul / corrupt / to smear / to defile / dirt / filth
basin / wide-mouthed jar or pot
literal-minded / pedantic / doctrinaire / longwinded / circuitous
surname Xu

Words with 于

(of sound) to never stop / to fall incessantly on the ear / to linger on
as many as; no less than / not inferior to; as good as; on a par with
unwilling to accept / not content with (a subservient role, a mediocre result etc)
to come and go in an incessant stream
to be well aware of sth / to understand clearly
Yu Dan (1965-), female scholar, writer, educator and TV presenter
(literary) (of a girl) to marry
the joy of matrimony (polite phrase referring to a young woman)
Yuhong district of Shenyang city 瀋陽市|沈阳市, Liaoning
Yuhong District of Shenyang city 瀋陽市|沈阳市[Shen3 yang2 shi4], Liaoning
more hands than needed (idiom); too many cooks spoil the broth
to be well aware; to understand clearly
the whole year must be planned for in the spring (idiom) / early planning is the key to success
make your day's plan early in the morning (idiom) / early morning is the golden time of the day

Sentences with 于

yú
nǐ
men
zhè
hua̅
guǒ
sha̅n
kě
shì
dà
bù
xia̅ng
tóng
a