I do think the Chinese were studying this virus in the lab, not engineering it, but studying it. I do think it was the result of a lab accident, a technician tried to cover up an accident/carelessness in order to avoid getting punished or fired, normal human behavior.
HOW DID THE CHINESE KNOW THEY HAD A NEW VIRUS WHEN THEY ONLY HAD A HANDFUL OF CASES????????
Covid-19 presents like the flu, without a test you don't can't know if it's the flu or Covid-19, but the Chinese knew they had a new virus in late Nov, early Dec when there were only a handful of cases. HOW DID THEY KNOW???
The only way to tell if you've got something new is because: a) unique symptoms b) a statistically significant increase in cases c) a statistically significant number of deaths
In the early day of Covid-19 you had none of these present, with only a handful of cases NOBODY WOULD HAVE SUSPECTED ANYTHING WAS AMISS.
I can see it now, "Hey, I'm thinking that we have these flu cases, in flu season, and there isn't anything remarkable about the cases but I think they are the result of a new virus, so we should raise a red flag and swing the government into action." Highly unlikely.
There is one other way that you know you've got something new: d) you know something that no one else knows, like there was a lab accident.
How did the Chinese know they had something new, when they had no evidence or indication that something new was circulating?
This is the only question that needs to be answered. Nothing else. If there isn't a reasonable and logical answer to how the Chinese knew they had a new virus with only a few cases that looked just like the flu, and no other information, then it stands to reason they knew something else.
What I think happened.
A lab tech had an accident or was careless, and exposed themselves to the virus they were studying in the lab. The tech didn't report the incident because they didn't want to be punished or fired. The tech incorrectly assumed that everything was fine, but then got sick. Then when some other lab workers got sick, the safety people at the lab got involved and they learned what really happened, and they pushed the panic button, quietly. The rest is history.