MTL - Heroes of the Invincible Undead - Chapter 16 Besiege one

The year was 2030 when dungeons descended and wreaked havoc across the world.Fortunately, along with the descent of the dungeons was the awakening of various people obtaining superpowers, allowing the world to barely defend against the worldwide threat.Five years later, Desther, a young man that only wants to watch anime and read online novels, awakened the SSS-Grade Talent, Ultimate Thief, allowing him to steal a target’s attribute in battle and making it his own.However, along with the overpowered talent, was an announcement he wished he never got.[You obtained the title, [Chosen One]][Clear the dungeon or Die!]

He is Xi Liang’s legendary emperor: a decisive and ruthless king; a man of supreme wisdom; a cunning strategist.

According to legend, he once conferred the love meant for the three thousand concubines in his harem onto one woman, while the world watched in envy.

According to legend, he once executed a hundred people for her, turning the palace into a purgatory overnight.

According to legend, he ultimately sentenced that same woman to death by execution…

A conspiracy that swept through the country resulted in her tragic end. This lifetime seems to be a repeat of her past life. Can she escape the clutches of fate to attain true love in this life? In both lives, she was the Emperor’s wife, but is that ruthless man really her true love mandated by Heaven?

Did she really die, just like that?

In the end, beyond the veil of lies and mysteries, who exactly was she? Was she a woman that he truly loved, or was she merely a chess piece to be used in his political machinations?

The stories passed onto later generations remain fraught with conflicting opinions.

- Description from Novelupdates

After many years of unrequited love, she used her power and favors to coerce him into marrying her. Yet, she knew there was a constant “lunar light” in his heart. In the presence of this lunar light, he would never cast a glance upon her. Eventually, she regretted it, she no longer wanted this marriage. But who could tell her why the man had started to relentlessly pursue her now?

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates