通路子

通路子

Literally means:

gain one's end through pull

Actually means:

try to establish underhand connections for the sake of personal gain

It means taking advantage of the connection with others to break through key links and get some thing done.

This is something underhand and is often criticized or accused. Derogatory.

借助人情关系打通有关的途径，把事情办好。

这不是一种光明正大的事情，常受到批评或指责。具有贬义色彩。