Dominion's End - Volume 4, Extra 2: One Day in the Apocalypse

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

“Lin Changan, you don’t want to get forced to marry a person, right?” a gorgeous young lady asked as she put a Slave Contract in front of Lin Changan.

Lin Changan was in complete desperation when he received the Emulator System which allowed him to simulate his life.

After each simulation, he could choose to either gain a talent, a realm, battle experience, cultivation, or part of the memory from the simulation.

“You have rejected the Slave Contract and were killed in the Underground City by a love rival.”

“You have chosen the talent, Live a Hard Life.”

“At age 22, your sick junior confessed her love to you and you rejected her. That made her hate you and she poisoned you to death.”

“You have chosen the talent, Complete Poison Immunity.”

“At age 24, you were killed during the monsters’ attack.”

“You have chosen the realm and have gathered the Star Power.”

“At age 24, you fought the monsters’ attack as a general but still died in the end.”

“You have chosen the talent, Restlessness.”

“At age 24, you fought the monsters in the front line but you have exhausted your spirit energy…”

After countless simulations, even the slightest move Lin Changan made could shake the entire world.

“Simulation begins.”

“You are now invincible.”

{One Piece, navy, check-in, physical skills, great swordsman, cool!}

People in Pirates get a nine-to-five check-in system.

From joining the navy and clocking in to work, I became stronger.

You said that if you beat her, you can get 100,000 overtime pay?

Sorry I was able to hit you broke!

You say I pity the fragrance and cherish the jade?

I’m sorry, but you just don’t have the qualifications to grab the second wool!

You want to test my strength?

I don’t work overtime without half a million!

As a qualified naval animal, working from 9 to 5 on weekends is the last word!

terribly sorry,

terribly sorry,

- Description from novelbuddy

In her previous life, she was a highly respected Heavenly Empress, but on the eve of her wedding, she was betrayed and died by self-immolation!