I rented a house, but I hung a small mirror on the kitchen window, which made my heart very hard. Who knows what this means?

Mirrors can ward off evil spirits. Hanging mirrors on windows can block evil spirits, that is, they can block bad things outside, such as ghosts and bad luck. Because in Feng Shui, mirrors can reflect these bad things and prevent them from entering the house.

This is a rented house. I think there are several possibilities. First, the previous owner was superstitious, so he hung up this mirror. First, something bad happened in this house before, and this mirror was hung to ward off evil spirits; It is also possible that there is a mirror hanging upstairs opposite, and the owner is afraid that those bad things opposite will be reflected to his home, so he also hangs a mirror.