```
And each teacher's supervision of classes was not even the same.
"Dean Tang, I'm off now! Better to get to the classroom early and prepare," Xiao Yifei said with a smile to Tang Weixing, then left the office with a smile on his face and headed towards the classroom he was assigned to monitor.
Tang Weixing watched Xiao Yifei's departing figure and suddenly remembered something, a look of concern flashing in his eyes.
Shen Liguo was also in the office. When he heard Tang Weixing say that the questions were very difficult, his heart had been filled with worry, fearing that if the students performed poorly, it would reflect badly on him. But when he saw Xiao Yifei appear, his eyes lit up, and a cold smile spread across his face.
