What should I do if I suspect that there is a ghost at home and there is an abnormal noise?

Honey, what you described is not enough to show that your house is haunted, but it can't be ruled out. Please pay more attention to the recent changes in your family, including the fortune, health and dreams of everyone in your family. Then make a conclusion. In order to solve your doubts in an emergency, I will teach you the simplest and most effective method for the time being, that is, reciting the six-character Daming Mantra. If you still can't remember six words, then recite the name of Buddha. There are many ways to be protected by law and good god, and these two are relatively simple, I hope they can be used. Remember to be sincere when reading!