Been listening to Pence again too. This is an article I found back in 2018 of a leaked Chinese government memo of censorship instructions.
I thought it was mentioned by Pence in this vid but haven't found it yet.
https://chinadigitaltimes.net/2018/06/minitrue-on-u-s-china-trade-tensions/
Found The reference to the document @ 24:25
In June Beijing itself circulated a sensitive document entitled Propaganda and Censorship Notice.
It laid out its strategy. It stated that China must in their words quote, strike accurately and carefully splitting apart different domestic groups in the United States of America.
To that end Beijing has mobilized covert actors, front groups and propaganda outlets to shift Americans perception of Chinese policy.