Let me give you a simple maybe non-related example.. I tried to get a visa for China and it wasn't possible at all through official channels.. No matter what I did (embassy, visa offices and whatnot), they simply wouldn't grant me a visa which would allow me to enter and leave China as I wanted (only single/double entry, which is no good).. In the end after some help from a Chinese friend, I managed to get a visa because he knew somebody who knew somebody at the local police station, who could print a visa for me..
This is how you get stuff done in China - you know somebody - I now owe my friend a favor and as I understand it is unforgivable, if I do not pay him back some day in some way. China is driven by guanxi (http://en.wikipedia.org/wiki/Guanxi) ..
I am totally speculating here - just a laowai trying to figure out what the hell is going on. Someone Chinese please enlighten me!..