System: After the fortune telling, my cultivation level skyrocketed.

The senior sister stopped pretending. Her originally gentle face twisted instantly, and she slapped Gu Ying hard across the face. With a crisp sound, a bright red handprint appeared on her face.

Senior Sister sneered, her laughter like the hooting of an owl, sending chills down one's spine: "Your parents, your family, oh right, because you were the only one who survived in the same batch of 'feed,' everyone in your village has been captured and thrown into the feeding pit by me."

"Hehehe..." Senior Sister's eyes flashed with a wicked and crazed light, a light that revealed cruelty and pleasure. She lightly snapped her fingers, and instantly, the Gu worms that had already been planted in Gu Ying's body seemed to receive a command, writhing wildly.

Gu Ying felt a churning pain throughout his body, large beads of sweat rolling down his forehead, his body trembling uncontrollably. In this excruciating agony, tears streaming down his face, Gu Ying knelt slowly on the ground like a dog with a broken spine, humiliatingly sticking out his tongue to lick the toes of his ugly senior sister, the enemy who had wiped out his clan. Each lick seemed to carve a deep wound into his soul, and he was powerless to resist in the slightest.

"Oh right, I forgot to tell you." The senior sister lowered her head smugly, ruffling Gu Ying's hair with her hand in a gesture laced with utter humiliation. She leaned close to Gu Ying's ear and said with a sinister smile, "Your little junior sister Yingying, she was fed to me by Gu worms in the third year we were together. Remember after she died, I appeared in her guise, and the first time we made love, you even complimented me on how supple my waist was, hehehe..."

The moment he heard the news, Gu Ying felt a darkness engulf him, as if his entire world had collapsed. His eyes glazed over, all hope and light extinguished in that instant, and his heart died completely.

From then on, Gu Ying became her senior sister's puppet, allowing her to humiliate and manipulate him at will.

In those dark and hopeless days, every day felt like being in the depths of hell. Every day, swarms of Gu worms, like hungry demons, frantically gnawed at his internal organs, the excruciating pain driving him to the brink of collapse.

Whenever the pain reached its unbearable limit, he could only beg his senior sister for help like a dog wagging its tail. Each plea shattered his dignity.

Gu Ying endured these incredibly stifling and desperate days for a full two hundred years. Two hundred years of time were like a dull knife, repeatedly cutting into his body and mind.

However, even in this endless darkness, the flame of revenge in Gu Ying's heart never went out. It burned stubbornly deep within his heart, growing ever stronger.

Another hundred years later, a sect upheaval, like a boulder thrown into a calm lake, shattered the oppressive atmosphere. This ugly senior sister was sent to guard a key location outside the sect.

There happened to be a master of Gu poison in the enemy camp. While secretly lurking and scouting, that person keenly discovered the existence of Gu Ying.

Subsequently, this person used a covert method to subtly influence Gu Ying while the Ugly Senior Sister was locked in fierce combat with his own side, allowing him to briefly escape the Ugly Senior Sister's control.

Having gained a moment of freedom, Gu Ying was like a beast that had been imprisoned for many years and finally broken free of its cage. It unleashed all the pent-up resentment that had been dormant for three hundred years and launched a frenzied counterattack against its senior sister. After turning the tables, Gu Ying's eyes were bloodshot, like a vicious wolf ready to devour its prey.

He painstakingly collected every scrap of flesh from his ugly senior sister, each piece carrying his hatred. After a long and complex refining process, he finally transformed the scraps of flesh into the likeness of his junior sister.

In order to allow his junior sister to "reborn," he endured excruciating pain in his soul and, with extraordinary willpower, separated half of his soul to reside in this "junior sister's body," making his junior sister's appearance his second primordial spirit.