China has 1.4 billion people. There are many that will follow a contract or work with you to adjust agreements to both parties' mutual benefit.
If you are leveraging guanxi, ask yourself why you feel it is ok to further empower a person that is causing harm to society. There are many in China that do represent your values. When you engage in guanxi, you are "feeding the dragon": empowering the wrong people and dis-empowering the right people.
note: when I say "you", I don't mean you personally.
So much easier.
Yet so much harder.
But that's China ;)
Having said that, after navigating those waters for awhile, I enjoy dealing with a clear legal framework, laws that are more often than not applied uniformly, and a government that doesn't stifle the free exchange of ideas on the internet to such a point that you need a pretty beefy VPN solution just to do a Google search.
Just my opinion though, good to hear you have been successful in your work - good luck and keep on trucking!