A great start!
When a top poison master meets a sinister emperor with a thousand layers of tricks, who is whose prey?
He is a cold-blooded king who regards the common people as pawns. He brings her into the palace, hoping to use her sharpest "poison blade" to eradicate dissidents.
She was an avenger who came with a blood feud. She followed his wishes and wanted to use the most noble "power" of the emperor to slay her enemies.
In the chess game, they are each other's most tacit allies, and they are also opponents who plot against each other.
He tempted her to fall, but she believed he was sincere.
Until the end, he presented all the imperial seals and military talismans of the world, and whispered in her ear: "Ningshuang, my heart has also quenched the poison. The only antidote is you."