There are always strange noises in my house recently. Sounds like a cardboard wall. It rings occasionally. There is a calendar next to my computer. I thought it was a calendar several times.

How did this happen? It's a coincidence. Your house is a wooden house. It expands with heat and contracts with cold. It's quiet at night and you will hear voices. Besides, from a superstitious point of view, people's souls will regain their sanity after one night, and they will not be afraid to see their relatives. Seven days later, they will go to Shi Gui to collect ghost hearts and be reincarnated. So, ah, you're being paranoid.