Time always flies quickly when you're focused.
When the pleasing sound of the school bell rang, indicating the end of class, the students finally revealed expressions of realization.
Almost as soon as Old Yao called out the word 'dismissed', numerous figures shot out of their seats like arrows released from a bowstring, racing towards the podium.
"Professor, I don't quite understand this derivation..."
"Professor, can the Lorentz formula you mentioned earlier be replaced by this…"
"Professor, why does my Lee-McKay expansion always differ from your results…"
Figures of different robe colors, genders, and grades, holding similar notebooks, revealed the same, yearning gaze.
This was a gaze that teachers find hard to refuse.
Professor Yao grinned happily, but didn't readily answer their questions.
"Zheng Qing, don't leave yet, come here." he beckoned, pulling the young cost student who was halfway out of the classroom back.