Radical 亠
12 strokes
capital 京 (239b) + especially 尤 (238) = right away 就
This character can also mean “regarding, concerning”.
一…就… (1) yī A jiù B no sooner A than B
[就是 (30) jiùshì even if; exactly; precisely]

In the capital it is especially important to get on the train right away. / The two dwarf attendants don’t like people joking around (as everyone’s in a rush).