Recording doesn't make sense, it's most certainly missing a lot of context.
It talks about "experts signing" to supposedly end quarantine, but then talks about how the decision is made based on X-Rays.
The purpose of quarantine is to prevent infection. This has nothing to do with x-ray images. You can certainly have healed lungs but still be infectious. To date, the only criteria for recovery has been testing negative for the virus twice in a row, with 24 hours between the tests.
Since the subtitles are in traditional Chinese, I can only assume that some Taiwanese person/organization manipulated this recording to disseminate more anti-China propaganda.