1 surname Gu

1 ancient times

2 olden times

1 to return to old ways (a Confucian aspiration)

2 to turn back the clock

3 neoclassical school during Tang and Song associated with classical writing 古文

4 retro (fashion style based on nostalgia, esp. for 1960s)

1 the distant past

2 ancient times

3 antiquity

4 early historical times

1 throughout time

2 from ancient times (up to the present)

1 a single slip may cause everlasting sorrow (idiom)

1 unchanging since times immemorial (idiom)

2 unalterable

3 unvarying

4 monotonous

1 the men of today are sadly degenerated (idiom)

1 to use the past to disparage the present (idiom)

1 unique

2 unprecedented (idiom)