"Who you know, who you blow" - "Hierarchy of importance and it's impact on relationships"
Google says this;
"
Guanxi is a term used in Chinese culture to describe an individual's social network of mutually beneficial personal and business relationships"
Not really sure of the exact way I would translate it. But it sucks when it affects you negatively, and is pretty good when it works in your favour...

Most people spend their lives trying to put themselves the right side of important people. The amount of times I have seen someone agree with the most incredulous nonsense, or get given opportunities thrown at them, simply for their percieved importance