Professor Li was choked and coughed violently.

Ye Chen hurriedly brought water and paper towels to him. Professor Li stayed up day and night, even a hard-nosed person couldn't bear it. He himself absolutely does not have the awareness to dedicate himself to science.

"Teacher, when Annie comes back from the United States during the summer vacation, she will definitely turn around and leave when she sees that you are still working day and night."