[A genuinely kind-hearted mind reader + cannon fodder + beloved by all + powerful figure transmigrates into a book + play the pig to eat the tiger + feel-good story] Actually, it's a passionate monster-slaying adventure.
Wen Mengmeng transmigrates into a book.
She becomes the mute girl of Xinghe Sect, a cannon-fodder character whose voice was stolen and identity usurped by the heroine. The heroine is evil to the core. She conspires with a lecherous man from Biluo Sect and uses Biluo Sect's secret treasure to summon countless evil spirits to attack Xinghe Sect, bringing about the slaughter of the entire sect. After absorbing all of Xinghe Sect's fortune, the heroine ascends to immortality with her lover and parents, earning the glorious title of Goddess of Xinghe in the eyes of the world, while everyone in Wen Mengmeng's sect is brutally killed despite their innocence.
Wen Mengmeng looks at the sect leader, who's been deceived for years. [Oh my goodness, your beloved adopted daughter is a total villain. She's the one who made me mute.]
The sect leader is stunned. After investigating, he finally sees the truth!
Wen Mengmeng looks at her frail, sickly senior brother and sighs. [Senior Brother, someone drugged you. You were supposed to become famous throughout the world! But don't worry, I can cure this poison!]
In the blink of an eye, the eldest senior brother of Xinghe Sect awakens the Xinghe Sword, his strength surging. No disciple from the four great sects can stand against him.
Ever since the mute girl of Xinghe Sect stopped being a fool, every river in the sect has been surrounded by koi, and the sect has grown stronger and stronger. Meanwhile, Biluo Sect, once at the height of its power, seems to have been cursed with bad luck. It keeps running into misfortune and steadily declines...