My wife is a Chinese so I’ve been interested in Chinese news, economics and geopolitics for 20 years now. I also have friends who have lived there for years, including one who’s father in law is, I’ll just say well connected*. I can’t give you one source, I read almost everything about China I come across.

* His perspective on the internal politics of zero covid isn’t anything I’ve seen reported anywhere so I can’t corroborate it in any way, but it’s jaw dropping. Basically his position is that the extreme swings in policy implementation by the regions is a deliberate attempt to discredit Hu. Since Hu has deeply identified covid policy with himself personally, and all the regional party factions absolutely hate his guts (which I know is true), they’re deliberately blowing it large style on covid policy. One clue this might be correct is national news now doesn’t mention Hu in relation to covid any more, but regional news often still does.