二に六ろく時じ中ちゅう

に

ろ

く

じ

ちゅ

う

Meanings

adverb, noun

night and day; all the time

yojijukugo (four-character idiom)

A yojijukugo meaning constantly, around the clock. The literal breakdown is 二 (two) × 六 (six) = 12 hours, doubled for a full 24-hour day. Used in both adverbial and noun roles.

彼かれは二に六ろく時じ中ちゅう仕し事ごとのことを考かんがえている。
He thinks about work night and day.
二に六ろく時じ中ちゅうスマホをいじっているのはよくない。
It's not good to be on your smartphone all the time.