C43 A Serious Man Is the Most Charming

"Knock..." "May I come in?" Huang Lei knocked on the door a few times and asked, afraid that it would be inconvenient to enter.

"Teacher Huang, come in." Zhao Xiaogu was taking care of Ni Ni inside. Once Hee Jiong and the others sent her up, they would go to their own room. It was really inconvenient for them to stay in a girl's room.

Huang Lei opened the door and smiled: "Mr