jīn​fēi​xī​bǐ

times have changed

今非昔比 jīn​fēi​xī​bǐ
times have changed
(idiom) the present cannot be compared to the past; used to describe how much things have changed, often implying that current circumstances are far superior or very different.

Frequency

Movie subtitles
0.570 per million appears in 0% of films
Written text
0.886 per million

Sources