Most unversity cities have virology groups, and coronaviruses became a popular research subject after SARS, particularly in China. The probability of finding a coronavirus researcher group in any large Chinese city was probably fairly large in 2019.
The WIV had also proposed collaboration with UNC to engineer a virus structurally similar to SARS-CoV-2, a chimera of two novel sarbecoviruses with a human-designed FCS. This wasn't funded, but an unconfirmed leak claims the WIV continued this work alone:
> The investigators spoke to two researchers working at a US laboratory who were collaborating with the Wuhan institute at the time of the outbreak. They said the Wuhan scientists had inserted furin cleavage sites into viruses in 2019 in exactly the way proposed in Daszak’s failed funding application to Darpa.
https://www.thetimes.com/uk/article/inside-wuhan-lab-covid-p...