tàn​wéi​guān​zhǐ

to gasp in amazement

叹为观止 嘆為觀止 tàn​wéi​guān​zhǐ
to gasp in amazement adjectiveverb
To acclaim something as the absolute peak of perfection or beauty; used when something is so wonderful that one needs to see nothing else.

Frequency

Movie subtitles
1.13 per million appears in 1% of films
Written text
1.81 per million

Sources