I really don't think it's all that different, sorry. The difference is that there is a more direct and established way of talking about these things in China, because it has such a long history of bureaucracy and everyone got used to these dnyamics over thousands of years, but even in places like Sweden you can have guanxi. It boils down to doing something for a member of your ingroup strictly because he's in your ingroup.

I mean even the word 关系 and "network" have the same etymology. 系 = threads of silk arranged in a pattern.