So I tried a few other origins and saw that the fares are ridiculously low not just from SFO, but some none hub cities on the east coast as well. Given that, while I wrote earlier that I had no intention of making the trip, I am now tempted.
But two problems:
1- it seems you need to have a 9-10 day stay minimum, which is not exactly a quick turnaround.
2- one ways from HGH to PEK are just under $300 at minimum.