MTL - Natural Fairy Species - Chapter 303v3 Patriarch Bai's named disciple

In this world, Planet Earth had undergone great changes and humanity is faced with extreme danger. Luckily, humans have something called the Heaven Dao software.

The meteor pierced the sky and also pierced the peace of the world.

Transcendent power comes to the world, who is watching in the dark, and who is whispering in my ear.

When the roar shatters the sky, when the power steps down the abyss, when all life and death are dominated… They call me – God.

- Description from novelbuddy

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

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?