China is certainly not a welcoming country, way too xenophobic, although can be ok for those who just want to have a good time and limit their social circle, which I have done, as most of the Chinese and foreigners in China are horrible people.

Yep. it certainly is their China, not ours! We will never be allowed to integrate fully into the society. We are considered aliens not only by the PSB, but also by many locals. Just this summer I saw a goods train transporting lots of newly-manufactured military vehicles, including tanks, passing through a train station. This prompted some patriotic Chinese to take photos thereof using their cellphones. They were extremely happy while they were doing so. They must be very proud of their country's military might! I guess if I'd have taken such photos, I'd have been arrested and accused of spying!
But the major plus for those of us teaching in the public sector is that we are working a part-time job for a full-time pay, and not having to work hard at all! I have found that a Chinese teaching assistant can make my teaching so much easier in public middle schools - a good t/a can reduce discipline problems and do some necessary translation. The downside is she will report back every minor thing just like a spy. So she cannot be trusted.
Uni work is ok too, but unlike middle school jobs it will possibly involve setting and marking written exams twice a term and giving oral exams, which can be a lengthy and boring process fraught with students trying to cheat while a few of their classmates will put pressure on the foreign teacher to increase their scores!
It's time to bring this post to a conclusion. To sum up, I'd say the advantages of being a foreign teacher in the public sector far outweigh the disadvantages. In fact, teaching EFL in China is a walk in the park compared to teaching pupils/technical college students in the West provided one stays within the public sector. Discipline problems in Chinese classrooms are nowhere near how serious they can be in Western classrooms!
Enjoy yourself in China - try to remember that China needs you though that isn't always apparent in your eyes, but it's so.