I, the Fake Eunuch, Conquer the Empress from the Start

[Lighthearted and witty + farming + fake eunuch + scheming for power + an emperor who disguises herself as a man]

Sun Yu transmigrates to ancient times and opens his eyes to find himself in the castration chamber. Luckily, just when things look bleak, his father turns out to be the one wielding the knife.

He tries to find a way out, but through a strange twist of fate, he discovers that the emperor is a woman.

From then on, he plays the fool while keeping his claws hidden, thrashes anyone who dares oppose him, roots out petty villains, brings prosperity to the land, and ushers in peace.