(historical) Tonkin (northern region of Vietnam)

activity, work, operation

to act, to operate, to work

(archaic) the place of residence of the emperor / (by extension) a capital city / (by extension) a capital (most important city in the field specified)

a placename / a surname / a female given name

city, metropolis / capital city / elegant, graceful, refined / gather, command

all, both, everyone, whole

urban / metropolitan / municipal / capital / imperial / prefectural / government / official

peacekeeping

epitome of Tokyo, miniature Tokyo