Mother and son are lucky enough to live together for three lifetimes. Next sentence

Mother and son are blessed for three lifetimes, and the bond of deep love lasts forever.

This sentence expresses the deep emotions and unbreakable bond between mother and son. The relationship between mother and child is unique and special. It transcends blood relations and is a deep and affectionate emotional bond. "A three-lifetime blessing" means that the relationship between mother and child does not only exist in this life, but spans three lives, and has far-reaching significance and value. No matter at the beginning or end of life, the emotion between mother and child is eternal and will not change due to changes in time and space.