1 in case (sth happens)

2 if

3 once (sth happens, then...)

4 when

5 in a short time

6 in one day

1 New Year's Day

1 Fudan University, Shanghai, abbr. for 復旦大學|复旦大学[Fù dàn Dà xué]

1 Satan or Shaitan

1 role of vivacious young female in Chinese opera

1 in imminent peril (idiom)

2 on the brink of crisis

1 to be at death's door (idiom)

1 fortune as unpredictable as the weather, every day may bring fortune or calamity (idiom); sth unexpected may happen at any moment

1 to wait for dawn, one's head resting on a spear (idiom)

2 fully prepared and biding one's time before the battle

1 overnight until daybreak (idiom); all night long

2 day and night