You Wanted Me to Be a Eunuch, and Now You're the Emperor?

Framed by his vicious stepmother and younger brother, he is ordered by the emperor to enter the palace as a eunuch. By chance, he obtains a wordless heavenly tome, and one supreme cultivation technique, peerless divine physique, dual-cultivation secret art, and sacred medical canon after another come his way. From then on, a legend rises from the imperial harem. I shall be king and rule over all worlds.