C380 The Sudden Shaking of the Plane

Xu Dong watched Ye Yu, who remained unfazed, and furrowed his brow, speaking sternly, "Confidence is a virtue, but it's important to know your limits. This math competition is extremely challenging! Overconfidence can easily slip into arrogance."

The three students accompanying Xu Dong glanced at Ye Yu with a hint of scorn. "Heh, quite the talker, aren't you?" one of them sneered