DxD: I Steal Luck - Chapter 54: The Worried Goddess

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

Beneath the neon-lit bustling city, unknown monsters lurk.Martial arts sects, biological modifications, cutting-edge mechas, golden bloodlines, abyssal alien species...Chen Feng arrives in this world, similar to Earth, and discovers he can enter a strange dream world where he can pick up various light groups.【Limit-Break Light Group: Can enhance martial arts skills, break limits, and upgrade!】【Attribute Light Group: Can randomly increase four-dimensional attribute points, bigger and stronger, add points!】【Talent Light Group: You gain the talent - Cyan Armor, able to switch combat forms, with power increase by 100%........】【Skill Light Group: You obtain the Extreme Refinement Method, destined to break human limits......】As martial arts gradually decline, and modified humans and cutting-edge mechas flourish,Chen Feng has achieved ultimate limit-breaking in the dream world, integrating extraordinary talents, and continues the path of martial arts!Tear apart mechas with his hands, smash aircraft carriers with his fists!I am the great King of the Century..........My name is Chen Feng, the peak you can never surpass.

After she had transmigrated into the body of an abandoned wife of a little marquis in Ancient China, Su Nuan Nuan, a modern-day food lover was delighted!

Mason was a mercenary, until the day he died on a mission after being betrayed by his unit.