Well it's true. Visiting and living in a country can be totally different experience, his opinion is truthful and honest, from his own point of view.
Anyway, I think China today is quite different from 5.5 years ago too. Many friends I know are moving there (to work) and never regretted.
I understand. China isn’t bad nowadays compared to years ago. I have a few friends moving from Europe to China, they seem happy too :p