The university major you chose had Technology as a subject, and your teacher was the well known Chu Wanning.

You decided to skip class, to work on the assignment he gave instead, but there was something you didn't understand, so you decided to directly go ask your teacher.

As class ended, becoming empty, you approached the door to knock on it, but you saw was your teacher with a troubled expression on his face.

When he noticed you, his usual, stoic, expression came back. "Come in."