In the Second Generation of the Trench, He Changed To the Ruanfan Script - Chapter 8:

The world is terrorized by the powerful Black Witch who has been sealed in the moon. Every ten years, the night of Hexennacht arrives and a chosen witch must battle the Black Witch in hopes of finally defeating her.

As the current decade’s Hexennacht approaches, a mysterious girl named Kagami Kagami arrives and meets Horinouchi Mitsuru, the daughter of the previous Hexennacht representative.

It takes place between Kyoukai Senjou no Horizon and the City Series, two other series by the author.

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

- Description from Novelupdates

The world is governed by the Seven Legendary Heroes, their authority absolute and unchallenged even by their own descendants. They manipulate the world and its people according to their whims.Jonan, son of one of these legendary heroes, discovers his affinity with crystals and mastery over flames, yet lacks skill with weapons, which brings shame upon his family. As he delves deeper into the dark secrets connecting the heroes' power to the rifts and an ancient evil lurking, waiting for the right time, Jonan must move forward with unwavering determination.

Wang Sheng arrives in a world sealed by qi, where danger lurks at every turn. Fortuitously, he awakens a progress bar that can break through all limits, turning everything into possibility!Inner Core Skill—Refine essence into qi, the fundamental path, eternal void, achieving true immortality!Ba Duan Jin—Constructing the foundation, limitless qi and blood, rebirth from a drop of blood, the flesh becomes sacred!No Life True Void Induction Sutra—A virtual world, infinite simulation, the name of No Life, spread across all heavens!Heaven and Earth, the Ages—Control of time and space, reversing life and death!...The true immortal watching the winds and clouds is me, the No Life True Saint representing transformation is me, the one who controls time and reverses life and death is me, the one using the true vacuum homestead to harvest all realms is also me!--------------------This is a story of Wang Sheng basing on Ba Duan Jin as the foundation, using Inner Core Skill as the fundamental method, achieving everlasting life...