Cast a stone into the well
It is a Chinese idiom, Pinyin is t ó ush í Xi à J à ng, which means to take advantage of others' danger to set up. It comes from Liu Zihou's epitaph.
Idioms and allusions
[source]: it is said from the epitaph of Liu Zihou written by Han Yu of Tang Dynasty: "once you are faced with small interests, you will find that if you fall into the pit, you will be rescued by different hands, and if you push against it, you will fall into the stone." [example]: can Zheng wants to overthrow Pei Shu and others. He is happy to add some bad words to Quan zhongchu, and bring the two aspects of loss and distance together, which means he is in the same party with Shu. The 100th chapter of the romance of the Tang Dynasty by Cai Dongfan
Discrimination of words
Usage: used as object and attribute; used in dealing with affairs
Cast a stone into the well
conversant with things present and past - tōng jīn bó gǔ