Ah, true, but to the best of my knowledge, blimps don’t fly that high and fast.
Blimps of known design. You could design one that does that.
I am just throwing out an idea. It is remotely possible the CCP had a Unique thought not thieved from the West.
For a cylindrical object to remain aloft at 40,000 feet it would somehow need to generate lift. So it would have to be stabilized or maneuverable and traveling at a very high rate of speed to remain at the altitude. I think this is all fake news to take the publics attention of the failed communist leaders in the US and Canada.