Redfly: Reborn as a Gu, Spoiled by the Sickly Demon King

[Rebirth for revenge + Demon Lord's sweet pet + Pretending to be a pig and eating a tiger + Decisive killing + Yandere paranoia + Ex's crematorium] In her previous life, she was the number one saint in the immortal realm, but she was refined into a "magic elixir" by her most beloved master, Feng Xuanqing, just to help him ascend. She didn't know until her soul was destroyed that the centuries-old kindness was all a scam. He not only wanted her life, but also wanted to enslave her soul forever and refine it into a [Gu Divine Weapon]! In her rebirth, she became his carefully prepared "prison pet" - a red-eyed golden fly as big as a grain of rice, but accidentally fell into the hands of the world's number one demon king, Ye Hanshang. The demon crushed her to death and she was reborn; burned her with demonic fire and she was reborn! What doesn't kill her makes her stronger! At first, the feared Demon Lord only regarded this "unkillable" little thing as a toy to relieve his boredom. Until the night of the full moon, when the Soul-Eating Curse struck, and he was dying of pain, this little insect brought him the first trace of peace in a thousand years with its faint ringtone and light. From then on, she became the love in the palm of his hand, the darling in his heart, and the love in his heart. The treasures of heaven and earth are allowed to be swallowed by her, and the divine thunder of the Nine Heavens is carried for her. Later, she cultivated a golden body and transformed into a human form. The Demon Lord pressed her against the wall, his black eyes filled with paranoid love, and his voice was hoarse: "Little thing, my palm is not easy to treat. Either, be my Demon Queen; or, I will 'kill' you ten thousand times now, until you agree." Lingsu's red eyes turned and he smiled strangely: "Ye Hanshang, don't forget, we are just using each other!" But he lowered his head and kissed her lips, declaring domineeringly: "Oh? But I... Take it seriously."