Leave airport without visa between flights?

Hi!

My first flight arrives in Wuhan airport 3:05pm Sunday 17th June,

and next flight to London leaves 2:20pm Monday 18th June,

can I leave the airport grounds to sleep at a hotel for the night without a visa, and if so how could I get this confirmation in writing (ideally email) from airport before I book my hotel?

(If not I’ll sleep at the airport no problem!)

Thanks,
Robin