Attached below is a video made by a self-host in Beijing, further "divulging" to audience what was the real situation that former general secretary Hu Jintao was left the venue in 20th plenum of CPC.

https://www.youtube.com/watch?v=Dw2Ef4V9USo 

I don’t know what you will think about its reality, but it seems plausible to me.  Well, such a kind of video reflects that there is limited freedom of speech somewhat tolerated in China Mainland.  How about Taiwan?  See what Cai administration did to Cti TV.