Also, statistically, it's likely that in any given year, there will be some place in the world that is anomalous. You can't just pick and choose certain areas, going to a different spot each year, as evidence of a problem, you need to look at things globally.
> In Oceania at the present day, Science, in the old sense, has almost ceased to exist. In Newspeak there is no word for 'Science'. The empirical method of thought, on which all the scientific achievements of the past were founded, is opposed to the most fundamental principles of Ingsoc. And even technological progress only happens when its products can in some way be used for the diminution of human liberty. (2.9.30).
> The Party employs science and technology to curtail human freedom and privacy, and to control human behavior.
It's difficult to blame Chinese students for not wanting to stay when they're being met with outright hostile rhetoric from the political establishment. Economic considerations completely aside, no one wants to live and work in that kind of environment.