A surgical mask and no eye protection.
To be frank, I'm certain every individual that Xi came into contact with was vetted by the CCP for weeks before this dog and pony show was filmed to make sure they were not sick. Every square inch of sidewalk, hospital floor, walls, everything was likely disinfected to the point that nothing remained.
They had to get him out for the public to see, but if he was suited up in Tyvek and wearing an N100 with goggles, that would throw the wrong optics to the Chinese: that this shit is very, very dangerous and very serious.