[ChemSpider]

I agree. This take is supported by the fact that the Prof refuses to reveal the email address of the Canadian student. My guess is similar to yours. She received emails e. g. from a Chinese consulate but is not allowed to reveal that fact - so she made up this "Canadian student" story.

[krageon]

The likelihood that any consulate bothers itself to tell some uni student to shut up is extremely low.

[ChemSpider]

Well, you would be surprised. It seems attempting to censor Twitter and other publications is part of their job. They even review German children books:

https://www.dw.com/en/china-gets-german-childrens-book-about...

[dbuder]

You are wrong. Every broken window is seen to.

[1024core]

You don't know China then.