Substitute Bride’s Husband Is An Invisible Rich Man - Chapter 250 - The Unveiling

When Lu Yuan woke up, he found himself ten years in the past.Lu Yuan then made the choice no one understood.He liquidated his family fortune, dumped billions into “worthless” relics, and earned the title of the biggest idiot heir alive.But no one knew that three months later, the Global Awakening would arrive. Humanity would evolve. Alien horrors would invade. And cash? Just colored paper.Armed with knowledge of the next decade, Lu Yuan began his insane preparations. He spent billions to claim treasures no one else valued: the ancient Bodhi Tree that granted billionfold talent; the complete Dao De Jing; a farmland where a landed meteorite held a celestial sword embryo.The world mocked him as a prodigal heir. The antique world whispered about a mysterious buyer.The world laughed at him until the Awakening came. Then they trembled. Lu Yuan was invincible across the earth.Beneath immortals, none can defeat me. Before immortals, I’ll trade life for life.

Collection of short stories.

- Description from Novelupdates

I became the childhood friend of the protagonist in a novel. The childhood friend who died from taking drugs.

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?