"Right next to" being 14 km away, on the other side of a major metropolis.
Nobody knows where the outbreak actually began, though. Wuhan was just the first place it was detected. It could easily have begun somewhere in the countryside, only taking off when an infected person went to a major city. Just look how long it circulated undetected in the US - for more than a month - before anyone noticed.
It is quite unsettling to realise the strangeness of odds that it occurred right next to the Wuhan lab...