At the Guangzhou library they have book sanitizing machines. Something blows through the pages cleaning them.
we actually happen upon an interesting exhibit they had running from some sort of emergency crew. She pulled us in and gave us a little English tour and showed us some really cool drone equipment that allows them to find bodies at the bottom of rivers. Sounds mundane, but it was actually very cool, even these things that drag along the bottom and catch bodies along the bottom of the rivers and drones that can fly through forests at night to detect heat waves.
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