https://www.novelupdates.com/series/the-a-in-the-opposite-dorm-always-thinks-im-pretending-to-be-a-b/
Description [Edit]
As a Beta, Ning An's goal in life was to work hard, make money and get rich. However, his own dear father changed his aspiration and made him become a military academy student. Initially, he wanted to spend his days lazing about. What? The first place in the year gets a generous scholarship? Then staying up to study and train my body is nothing at all! The first place scholarship is definitely mine!
The A in the opposite dorm: So you're actually an O.
Ning An: Ah?
The A in the opposite dorm: I know. You're risking it all to prove that an O is not inferior to an A.
Ning An: You know my ass. Laozi is a B.
The A in the opposite dorm: You need to correctly recognise your own gender ah.
Ning An: .... Teacher. Report. I'm afraid this person is stupid.
note: Pretending to be a B' is 装B (Zhuang B). 装B also means to boast or show off
