I Turn Out to Be a Grand Master - Chapter 7

Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

[You can now choose three of the following seven options
1. Go back to five years ago with the present memory
2. Five centimeters taller
3. Seven million deposits
4. Appearance +50 points
5. A company with a market capitalization of 500 million
6. Proficient in a foreign language
7. Teaser live broadcast 10 million virtual coins]

Li Ang became angry after finishing the selection: choose every day, choose, choose, you will give it after the selection!
…
Fuck, it’s really shipped!

- Description from novelbuddy

“Wife! Come here!”“No!”She always thought he was aloof, but after getting the marriage certificate, the aloof military king immediately transformed into a wife-doting maniac.The husband indulges his wife in countless ways, Lily Turner finds it extremely exhausting, her protests go unheard, her pleas are ineffective, she wants to escape, but whenever she tries to climb the wall, it rises higher, leaving her in tears!When asked about the reason for his limitless indulgence, the young master responds astonishingly, “The one who dared to trick me into marriage, it's only her!”The woman beside him rolls her eyes at him: she is the one who got deceived, okay?

Three years into Qin Yu's marriage, his wife and in-laws all hated him.