1 variant: 夜 yè

1 midnight

2 in the middle of the night

1 nightclub

1 nighttime

2 evening or night (e.g. classes)

1 New Year's Eve family dinner

1 to live in the moment (idiom)

2 to live every day as if it were one's last

3 to enjoy while one can

1 to treat sb with due respect (idiom)

1 to wait at one's ease for the exhausted enemy

2 to nurture one's strength and bide one's time (idiom)

1 lit. to make night as day (idiom); fig. to burn the midnight oil

2 work especially hard

1 to make day as night (idiom, from Book of Songs); fig. to prolong one's pleasure regardless of the hour