Killer Queen: Tyrant, prepare to die!

I, Ling Ye, was the world's number one assassin in my past life, a life-and-death struggle.
Transmigrated into the body of a deposed empress in the cold palace—that's great, I'll just keep the drama going in this life on a different track!
I started with a terrible hand: poison has entered my internal organs, I'm pregnant, the tyrant is cold-hearted, and the concubines want me dead.
But I have a trump card: the art of killing, the Yama's Needle (medical skills), plus a precious son who can read minds.
After three years of lying low, I "died".
Upon her return, the martial world gained a formidable new lady, the "Night Phoenix":
✔️Vest: [Richest Man]: Jinxiufang has branches all over the world, and the national treasury doesn't have as much money as I do.
✔️Anonymous [Original Poster]: Tingfenglou knows the secrets of all officials, and powerful ministers tremble before me.
✔️Vest: Poison Doctor: Can save the emperor, and can also make his enemies die in a "reasonable" way.
✔️The best work: My Son: A cute and adorable dumpling in public, a cunning strategist in private, who specializes in tricking his own father.
At the palace banquet, I, dressed in dazzling red, made my entrance with my son.
The tyrant Nangong Ye, upon seeing the child's face, instantly turned red with remorse and publicly expressed his regret.
"Qingci, I was wrong! I'm returning the Empress's position and the empire to you. Please come back."
I held my baby in my arms, lightly tapping his face with the dagger, my smile as poisonous as a knife:
"Your Majesty, you've done something foolish again."
"Your empire, and my son—"
I will come to pick it up in person.
I've added firewood to your crematorium; I'm paving the way for your death.
---
[Reading Guide]
◆1V1, both partners are clean, HE (Happy Ending)
◆The female lead is the most insane and intelligent character, completely dominating the entire story; she'll use her hands rather than her words.
◆The little devil is cunning and resourceful; mother and son team up to trick their father without hesitation.
◆Tyrant's Crematorium MAX, Chasing His Wife Until He Kneels Through the Imperial Tomb