Sadly Shenzhen supposedly has the repuatation of having the highest proportion of educated people out of all of the cities in China. In other words you will find more people with master's degrees and PHD's than anywhere else in China. It's supposed to be a more "open" city.

Educated people can be the biggest snobs. Many of those with master's degrees and PhD's have spent most of their lives immersed in books, to the detriment of having obtained an education in life. They have shut themselves up in their own ivory towers, and know little about what's going on in the world. Avoid teaching there, you'll meet too many snobs, and people who think money is everything! You are better to teach in the backward places. There, you can experience the real China.