Owari no Chronicle - Volume 9, Chapter 26: Running Destination

In this world, there exists a throne so exalted, it reigns supreme, governing the fate of all.All the realms of heaven and every race, with countless beings, bow down in submission.Heroes of great worlds vie in a tumultuous struggle, each competing for this highest throne, battling to become the strongest emperor.An unrivaled human prodigy, Ye Chen, succumbs to the most fearsome catastrophe in history only to be reborn. With the memories of his past life, he recommences his cultivation, striving to become an eternal and supreme emperor.Witness the path of rebirth against all odds of a supreme sovereign!!!

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

After being betrayed by her fiancé and her cousin sister, she accidentally rescued an elegant but indifferent young master. Never did she expect to marry him and surprised many!

[Previously titled “The Queen is Wed”] By accident, Mo Shu bound herself to a system that demanded she court death daily in order to survive.As the malicious supporting character, her first task was to make the overbearing CEO despise her, while also playing matchmaker between the main female character and him. When necessary, she would offer her own face for them to crazily slap, assisting them to marry so she could make a perfect exit.Thus, Mo Shu, in her struggle to survive, spent every day tremblingly courting disaster in various ways. Yet, accidentally, she somehow ended up marrying the man she adored. Now, where did she go wrong?![Not a fast-paced traversing story][Crazy pampering + exhilarating plot]