The Author's Playground - Chapter 17: ????

“Rebirth in the 90s: The Counterattack of the Delicate Wife” is now available, please support it, dear old and new readers.Bai Xiao was reborn in 1985, back to when she was 18 years old during the release of the college entrance examination results. Her grandmother and uncle, afraid she would break free from their control, had hidden her university admission notice. Nobody would dream of stopping her from attending university this time. In her past life, her soldier brother and married sister protected her; this life, she would protect them.Chen Shimei's trash father, stepmother, and stepsister can all step aside, I don't know you.When she resolutely jumped into the river, that person... this isn't murder, sister is reclaiming her special ability from her past life.A certain man: Whether it's suicide or murder doesn't matter, you owe me a life-saving debt. Marry me in return!

Zhang Lin, the king of Holy Light duel, was smeared by the team’s design and forced to withdraw from the online game professional league.
In order to return to the top, pick up the previous Summoner trumpet to fight against the Holy Light again, and perform the return of the king.
Summoner PK is the weakest? NO, everything is possible in Zhang Lin’s hands!
Play around with the guild, get the best equipment, and make beautiful MM…
Single P, Triple P, Group P, let the horses come over!
The bloody battle ignited the passion. Zhang Lin and his friends stepped over the mountains of corpses, and let tears and laughter witness Zhang Lin’s legendary online game life.

- Description from novelbuddy

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?