Flash Marriage: CEO's Sweet Love - Chapter 31

Through a mysterious portal, Chen Jin arrived at this strange place – a post-apocalyptic world where civilization had been destroyed.

Consequently, he found –

A piece of metal scrap
A robot trash collector
A battleground
A city
A ton and more of gold
A copy of high-tech documents
A…
In short, Chen Jin found a planet.

- Description from Novelupdates

After rebirth, she, who used to be a top international spy, becomes the eldest daughter of the Fengs, a fat girl who is ugly and foolish in the eyes of the ordinary people.
Mastering Royal 18 Saber Moves and Purgatory 9 Palms, she rose to fame with the martial arts of Demon Cook.
Upon an imperial edict, she was ennobled as the wife of Lord Cen, and then suffered various intrigues and plots…
She proved herself to be a real overmatch and a true genius to the world…

Tang Shaoyang, an orphan who dropped out of the middle school to fight on the street as he found out school was useless for a penniless orphan like him.

Tang Shaoyang dropped out of his school, fighting on the street, and made a name for himself. Berserker Tang from Youyouliucun.

Afterward, Dragon Wing triad recruited him and everything was good for him. Even though the public deemed him as a tumor of society, Tang Shaoyang was having a decent life. Until one day, everything changed as an absurd and strange game started.

[… Game starts! Stage one: Survival for The Fittest!]

After the game started, zombies appeared out of nowhere.

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.