Shanghai, Shenzhen, Dongguan and Guangzhou, where the it industry is well paid, I do network marketing and seo optimization.
I'm from the north, too! Lived in Shenzhen for 6 years! Guangzhou, Dongguan and Shenzhen have similar climates, so they are more comfortable than Changsha. Overall, I feel that Shenzhen is still relatively tolerant and there are many opportunities! It depends on how hard you work. The cost of living is high and the pressure is high. Everyone is realistic. It's hard to find bosom friends. The competition of online marketing is fierce, even more cruel than Changsha. If you have enough work experience and confidence, it's not bad to come to Shenzhen. Dongguan is the factory of the world. The European debt crisis has a great impact on Dongguan. I don't advise you to go. Guangzhou is a city dominated by Cantonese, which is more exclusive than Shenzhen. If you can't speak the vernacular, I don't recommend you to go.