According to the CCP, whose version of the events cannot be trusted. The reality is that they had the time, means, and motivation to destroy any samples and records related to COVID.
Also speaking of patterns, the WIV has a history of safety lapses and was known to be working with SARS family viruses in BSL-2 labs, which are wholly inadequate.
Animals infected with the Thai virus were imported from Thailand to the Wuhan wet market. People on the north side of the river within 100 meters of the wet market got sick. People on the south side of the river within 15km of the WIV did not get sick. We are not relying on the CCP for the information that people on the south side of the river did not get sick. There were foreign citizens living south of the river and we got our information from them.
Here is a review paper of all the evidence so far:
https://www.annualreviews.org/content/journals/10.1146/annur...
https://www.realclearscience.com/articles/2025/03/28/covid-1...
Additionally the Biden administration and other world governments suppressed the lab leak hypothesis which means that researchers seeking government funding had an incentive to support the official wet market narrative instead…
https://thehill.com/opinion/healthcare/5058339-biden-adminis...
The review paper I mentioned shows dozens of papers showing evidence of market as initial spread.