There's a decent amount of evidence to suggest it did, and China has already shown themselves unreliable (putting it mildly) regarding information about the virus. I don't think you have a leg to stand on if you propose to speak with such certainty.
No evidence here, but it shouldn't be dismissed either.
From Wikipedia ..
> Coronavirus research
In 2005, a group including researchers from the Wuhan Institute of Virology published research into the origin of the SARS coronavirus, finding that China's horseshoe bats are natural reservoirs of SARS-like coronaviruses.[6] Continuing this work over a period of years, researchers from the Institute sampled thousands of horseshoe bats in locations across China, isolating over 300 bat coronavirus sequences.[7]
In 2015, the Institute published successful research on whether a bat coronavirus could be made to infect HeLa. A team from the Institute engineered a hybrid virus, combining a bat coronavirus with a SARS virus that had been adapted to grow in mice and mimic human disease. The hybrid virus was able to infect human cells.[8][9]
"China’s only Level 4 microbiology lab that is equipped to handle deadly coronaviruses, called the National Biosafety Laboratory, is part of the Wuhan Institute of Virology." In fact, when all this started, China was quite open about the lab story. Only when the containment failed, CCP decided to erase the lab story from the news.