In a Strange Apocalypse, a Person Becomes a 9S Level Ghost King

In the strange end of the world, the heroine Lin Wan's family, except for Lin Wan and her sister, were murdered by Uncle Wang and Aunt Li. After becoming ghosts, their souls were locked in the soul-suppressing jade, and I completely became an ordinary person. Uncle Wang and Aunt Li forced us to do hard labor every day and were often beaten. One day my sister touched the soul-suppressing jade, and Uncle Wang and Aunt Li started beating us again. Finally, my sister crushed the soul-suppressing jade, and my soul successfully returned to my own body and reached level 9s. "Uncle Wang, Aunt Li, you can't escape."