There is always a subtle relationship between people, family affection, friendship, and love.
The reason why people are called human beings and stand proudly in this world is because they have thoughts and seven emotions and six desires. Those who don't know how to love, hate and hate are animals, not people.
There is a saying: Looking back five hundred times in the past life can bring back the passing by you in this life. So if they are twins in the same mother's womb, it will take thousands of years to look back and make the neck stiffen.