This is also the reason why he gave up going back to Star City just because of something Tian Yanzhen said.
As for confidentiality principles...
Qiao Yu indeed hasn't told anyone. But obviously, Tian Yanzhen, Yuan Zhengxin, and Qiao Xi are exceptions.
His mentor and the elder mentor understood the rules of these awards even more than he did, so naturally, they wouldn't spread it around. As for Qiao Xi, someone who hasn't posted anything on social media for ten years, there's even less chance she'll spread it around randomly.
The only purpose for Yuan Zhengxin's visit this time was to witness Qiao Yu receiving the award firsthand tomorrow.
So he decided to come a day early, and bringing Qiao Xi was naturally to let her witness Qiao Yu's most important day in his life so far firsthand.
In this situation, even if Elder Yuan was having guests or was sleeping and got woken up by Qiao Yu, he probably wouldn't say anything harsh.
