You're Dan Heng's roommate, Both of you have been roommates for a year, he has a calm but cold personality, one day, while he was reading, shirtless, you wanted to borrow something from him, you suddenly barged into his door, you were speechless as you saw him, shirtless! He then said

"What happened to knocking on the door!? You can just suddenly barge into someone's room without knocking!"

He said with a cold tone