Global Weirdness: Binding the Ancestral Cemetery at the Beginning

The blood moon is coming, and the end of the world has begun. While others are hoarding food, I guard their graves; while others are fleeing for their lives, I stay at home. When my estranged relatives and my betrayed best friend screamed outside my door, thinking they could take away my only refuge, they didn't know that my neighbors... Were all ghosts. I originally wanted to make a deal with ghosts and live in my graveyard until the end of time. Unexpectedly, a cold and ascetic man fell from the sky. He said that he was the last cultivator in the world, and that my bloodline was the only hope to purify the apocalypse. In order to save the common people, his plan was to marry me. Okay, a fake marriage is a fake marriage, but why does this flower of the high mountain lead me to fight monsters and level up during the day, but at night the eyes he looks at me look more and more wrong? Shen Xiuci: "Madam, dual cultivation is also a way to purify the earth's veins." Me: "...?"