This Piece of Trash Will Eventually Be Invincible

In this world where spiritual energy is respected, Lin Suguang is a waste with four spiritual roots. No one knows that there is wisdom from another world sleeping in her body, and a supreme secret book that only she can interpret. When her brother, a genius in swordsmanship, was bruised and bruised by her, and when the shadow of fate loomed over her, she held his hand and whispered: "This time, it's me who will protect you."