铁算盘

Traditional (Taiwan): 鐵算盤

tiěsuànpán ㄊㄧㄝˇ ㄙㄨㄢˋ ㄆㄢˊ

    • shrewd calculator, especially over money
    • person hard to get the better of

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
iron abacus
Meaning
A person who calculates shrewdly, especially over money, and is hard to get the better of. Often mocking.

Sources