火眼金睛

huǒ yǎn jīn jīng

eyes that see through any disguise

Character by character

火huǒ
fiery

眼yǎn
eyes

金jīn
golden

睛jīng
pupils

老会计火眼金睛，一眼就看出了账目的问题。

The old accountant has piercing eyes and spotted the problem in the books at a glance.

Tone: positive (praise).

Sun Wukong got them from forty-nine days in a furnace.

Learn this in Lesson 209 · HSK 9+: 四大名著 (The four great novels)

A dialogue, a reading, word cards with audio and a drill that uses it, in Learn Chinese with Bao. The first lessons of every level are free.