1 crowd

1 surname Gu

1 ancient times

2 olden times

1 grave

2 tomb

3 mausoleum

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 a single slip may cause everlasting sorrow (idiom)

1 in groups of three or four (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)