The luncheon was somewhat awkward.
Especially in the main hall, where many professors from around the world greeted each other with, "Hi, did you understand?"
Then there would be an awkward but polite smile in return.
If the greeter was clever enough, they'd quickly add, "Haha, actually I didn't understand either."
This would immediately get them a bit of goodwill from the other person, and perhaps the two could come together and start murmuring about the day's content, looking forward to when those bigwigs with access to supercomputing resources would verify whether the general solution was correct.
If they had a good time chatting, they might even exchange the content and photos they'd recorded at the conference.
If the academic community eventually verified that the general solution provided by Qiao Ze was correct, then these audio, videos, and photos from the scene would be extremely valuable.
They'd be witnesses to history.