Sure - I'm not quite sure what the issue is.
A single person X becomes infected mid-week in Europe. Monday they leave for China. The next Thursday, they have a business meeting in China where they are symptomatic but have suppressed obvious symptoms with OTC cold medication - who wouldn't if you flew thousands of miles for a meeting?
A dozen people sit in a room in Wuhan with some infected person for several hours.
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> Extraordinary claims require extraordinary evidence.
An "extraordinary claim" is along the lines of UFOs, ghosts and goblins.
There are hundreds of millions of international passengers a year. That an unknown infectious disease could travel from Europe to Asia undetected is hardly an "extraordinary claim".
Pending any hard evidence at all, it can only be described as a hypothesis.