Three relatives died in one year, three aunts died in April, mother-in-law died in July, and aunt died in the twelfth month. Is this related to Feng Shui? What is the reason?

This has nothing to do with feng shui. Talking about Feng Shui is totally superstitious and idealistic. Modern people don't talk about Feng Shui. And your third aunt, uncle and aunt are all your elders. If you are middle-aged, your elders are all elderly. It is normal for people to have birth, illness, death and illness. You should face the reality, don't think too much and don't be superstitious.