Ghost Serial Robbery

After Xinyue and I graduated from university five years ago, we have never seen each other again. Xinyue comes from a remote rural area in Guizhou. When she was studying in school, I once saved her life. After graduation, she returned to her hometown. I only saw the news of her marriage in my circle of friends. This night, a thief sneaked into my home, and when I caught the thief, I found that the thief was actually wearing a copper bracelet that I gave to Xinyue. When I asked him to tell me the origin of this copper bracelet in exchange for letting him go, he told me that he used to be a tomb robber, and that this copper bracelet was taken from the hand of a female corpse in an ancient tomb while he was robbing the tomb. But on the third day after I let him go, I found Xinyue standing in the yard below me late at night. She told me that she was actually Xinyue's sister, and that their family had been controlled by ghosts, and Xinyue could only save their family's lives by constantly doing things for him.