This is not an accurate description. The first identified patients were people working in or living near a "wet market" where (among other things) various wild animals were sold. It's plausible that someone was infected somewhere else and the market was only the site of a "superspreader event" (rather than the earliest jump from some other animal to humans), but further details are speculative, informed by indirect phylogenetic evidence rather than direct forensic evidence.
It's not unusual/unexpected that there were labs working on coronavirus research in several major Chinese cities: the 2002 SARS outbreak, which began in southern China and caught researchers and public health officials off guard, led to significant investment in the study of coronaviruses.
It's not unusual/unexpected that there were labs working on coronavirus research in several major Chinese cities: the 2002 SARS outbreak, which began in southern China and caught researchers and public health officials off guard, led to significant investment in the study of coronaviruses.