Preprint was posted yesterday, attributed to Botao Xiao, since has vanished without a trace. Popped up right away in Google search until a little while ago, but the search links were dead. Now, it's nowhere - except, of course, the Wayback Machine.
Now, Botao Xiao is a real person, a molecular virologist whose lab was in Wuhan until 2017 when he stepped up to Guangzhou.
I cannot vouch for the authenticity of the paper. It may have been scrubbed because it is a fake. The alternative explanation of the scrubbing, however, is very concerning, so I'm posting it wit this disclaimer.
Believe at your own risk.
Unless you’re planning on traveling to the PRC with your laptop, I suggest caching the PDF, I tried, but it says “something went wrong.”
Interesting. Thanks Jim.