zhēn
to arrive
to reach (esp. perfection)
utmost
(used in commercials)
zhēn yú wán shàn
to attain perfection (idiom)
jī jǐn jiàn zhēn
famine repeats unceasingly (idiom, from Book of Songs)
zhēn yú zhì zhì
to attain a state of perfect governance (idiom)
rì zhēn
to reach day after day for