C1977 I Draw Circles in the Corner

"Professor Bai, let's begin..." After hesitating for a while, Qin Luo turned his head and looked at Bai Hang.

"Let's start, let's start now." Bai Hang said hastily when he heard Qin Luo's words.

If this didn't start, the dignified Yanjing Aerospace Technology Research and Development Center would really go bankrupt...

"Professor Zhao, Professor Zhao Huairen