Given that his entire family in China has effectively been erased as far as he knows, I think the CCP has a pretty strong level of control in the vast majority of cases.

He currently lives in Netherlands while his wife and child are in Turkey.

Of course there are primary sources, it's just that they're usually in Mandarin or Uyghur or some other non-English language of the region, and they're not nicely reduced down to a few key statements like a news article.