บท 43: Good News; Sold Out by Others in the Blink of an Eye!

If Professor Zhang had come silently earlier and left silently now, it would not have been a big deal.

However, the key point was that he had just greeted them.

After hesitating for a long time, Professor Zhang finally coughed and said, "You guys must be Lin Fan from the mathematics department and Xia Bing and Xia Xue from the computer department, right?"

Lin Fan seemed to have just noticed Professor Zhang. He slowly let go of Xia Bing and Xia Xue before saying, "Yes, that's me." 

Professor Zhang was indeed a professor. He had seen countless storms and quickly forgot about the scene just now.

"Let me introduce myself. My name is Zhang Yong, a professor in the School of Mathematics.

"Mathematical modeling is an important method that uses mathematical tools and a computer to build a model, thus solving practical problems...