"I've finished."
"…" He heard Sheng Yang's voice when he had just read two pages of the document. Full of disbelief, he stood up and walked straight over then his gaze was glued to the answer.
The problem-solving process was too long so he didn't remember it clearly, but he remembered the answer. This was the right answer to this question.
He stroked his chin, glanced suspiciously at Sheng Yang, then took a picture of her problem-solving process and sent it to that professor.
He didn't think he would get a response from the professor so soon because he was famous for his arrogant, grumpy character. However, only one minute after he sent the message, the professor called him.
"Who solved this question? So can it be solved this way?" The old professor was very excited.
"Well, I'll tell you later." The principal had always been very humble in front of the old professor. This time he finally could hold his head high.
