Progressing from characters to words and idioms marks advanced Chinese. This guide freely explains 「焦熬投石」 for your learning.
The idiom 「焦熬投石」 is the focus of our introduction today, and its explanation and application are listed below.
Take something very brittle and hit it against a stone. A metaphor for something that is bound to fail.
The Mandarin pronunciation of this idiom is :
jiāo áo tóu shí
while its Cantonese pinyin is :
jiu1 ngaau4 tau4 sek6
The collection of Chinese idioms is enormous, with each one holding its own meaning and purpose. We hope these resources can assist you in better understanding and learning Chinese.

