My Dao Companion Is Sweet on the Outside, Dark on the Inside

My undercover cultivation partner is always trying to cut out my core. Later, he betrayed his sect and slaughtered the Immortal Alliance for my sake. I am the sole survivor of my sect's massacre and the most wanted fugitive in the Three Realms. The night I fled for my life, I carried an ancient forbidden book, a hot potato, against my chest. The entire Xuanyue Sect claimed that I, a worthless outer-disciple, had used forbidden arts to slaughter every elder in the sect. How ridiculous. Just yesterday, I fell off a cliff while trying to fly my sword, and my fellow disciples laughed about it for three whole months. The man who saved me was called Yanqing. His swordlight was as cool and clear as moonlight, and even when tending my wounds, he gently wiped away my blood. But I knew: he hid a token of the Netherworld Hall in his sleeve, and the way he looked at me was like he was weighing a sacrifice he would eventually cut open. Sure enough, when a mechanism roared to life deep inside the ruins, he pinned me against a stone wall. The sword at my heart, his voice soft as a love confession: “Zhaoxi, give me the ancient book, and I'll make your death quick.” I coughed up blood and smiled. “Funny… the book says it needs three drops of blood from my heart to open.” And then… The man who said he would kill me betrayed his sect for my sake, bathing three thousand miles of pursuit in blood. The spy who had infiltrated my life gouged out his heart on the snowy plain to trade it for my life, then knelt before my ice coffin and kept watch for a hundred years. The young lord of the Netherworld Hall became the “Bai Ze God of Slaughter,” a laughingstock to the Three Realms, all because his cultivation partner was me, the woman the entire cultivation world had once tried to sacrifice to the Abyss. They all said I was the key to opening the door to the world's destruction. But they didn't know the lock had long been fastened to the heart of its savior. He held the lock tight and smiled at all living beings. “Touch her?” “I'll destroy the world first, and let you see.”