I Underestimated Your Ability

He began to read from the textbook, in a clear and fluent voice. 

At first, Ning Yu followed along, grasping the concepts he presented. However, as Sun Yinghao delved into more complex details, his English took on a perfect accent that left Ning Yu bewildered.

She found herself lost in the sea of unfamiliar words, wondering how on earth he expected her to comprehend it all. His voice seemed to enter one ear and exit the other, she struggled to keep up.

When Sun Yinghao finally concluded his explanation, he turned to her and asked, "So, do you understand?"

Ning Yu sighed, shaking her head in defeat.

Sun Yinghao frowned, noticing her confusion. He asked calmly, "What part did you not understand?"

Ning Yu felt embarrassed and lowered her eyes further. She said softly, "As soon as you started to speak English, it's like my brain fell asleep."