MTL - The End Of The World’s Poisonous Mom And Monster Baby - v3 Chapter 48 found the source

Jiang Pengji got something called the Court Intrigue Stream System.
System: “Your goal is to become the most prestigious woman in the kingdom (the Queen)!”
Jiang Pengji: “Okay, System. No problem!”
Years later, she met the target by becoming the most prestigious woman (the Empress).
Jiang Pengji: “Well done, no?”

- Description from Novelupdates

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

“The world falls silent, and everything returns to ruins.”

Su Yu crossed over to the Water Blue Star, and again saw swarms of people crossing over to the Sea of Returning Ruins in order to survive, so he had two talents to begin with.

“SSS-grade insight talent”

Talent Description: Insight into all things. Spy on more hidden information.

“Unknown level talent double happiness”-Upgradable

Talent introduction: open treasure chests, and you can get double resources. Upgrade conditions are unknown.

Note: For special class treasure chests, you need to complete the treasure chest test to get double rewards.

Su Jianan was marrying the love of her life. It all seemed picture-perfect, except for a few catches. One, it was a marriage of convenience. Two, she would be divorced after two years.

With her well-being under threat, Su Jianan had only one choice to keep herself safe: marrying, and pretending to be loved by a powerful man capable of protecting her. Conveniently, her soon-to-be husband was Lu Boyan, a man she had been secretly in love with for fourteen years. She went along with the marriage, knowing full well that her love was one-sided.

Or was it?

Business tycoon Lu Boyan had known Su Jianan ever since she was ten. Back then, the death of his father had plunged his world into darkness, and Su Jianan’s presence had brought a new ray of light into his life. Now, it was his turn to protect her. He would marry her to keep her safe. But two years later, he would divorce her: it would no longer be safe for her to remain by his side.

What fate awaited Su Jianan and Lu Boyan? Would their marriage mark the beginning of a happily ever after? Or would it lead to heartbreak and sorrow? Would their marriage outlast the two years? What kind of secret was Lu Boyan keeping?

Follow along with the twists and turns of this slow-burn, action-packed love story!

- Description from Novelupdates