Without any sugar coating....
From my observations, Guanxi is a bit of a closed shop to sai yan, ie to foreigners, unless, you are one of the established Hongs of Hong Kong, otherwise, you need to be proven, that your business idea, matches your ability to pay/supply.
It will also take, many years for you to be even considered under the terms of Guanxi, which doesnt take kindly to unknowns, or weizu, outsiders etc... You need to be properly introduced via somebody else,who is trusted, based on them knowing you for many years.
If you are planning on building anything, here, you need to have a name/rep/guanxi/influence, the building community here is pretty incestuous, everybody, knows everybody...They'll laugh at you if A/ you are nobody or B/ have no access to the capital to pay for a job, not to mention the tricky nature of securing land, to build on...
The locals here don't have a problem raising capital, and they expect you to be able to do the same, if not, bye bye. Very big money, talks in this town....