C300 Teaching Building

Then knock on the classroom door.

"Who is it? Please come in!" A dignified voice came from inside the room.

"Hello, teacher. Excuse me. May I ask where is Grade 2 Class 4?" Hee Feng politely greeted the bald old man inside and said.

"The second one on the east side of the fourth floor." The old man snappily said to him and continued his lesson