Because of their good health, their children and grandchildren are loved under their knees. What do you mean?
Family happiness. "Fortunately, I am in good health, and my children and grandchildren can't hug their knees" is the family happiness that people enjoy when they are old. My son is married and has a next generation, that is, a grandson. He feels very excited and happy. My son and grandson are always around, which makes him no longer lonely in his later years. It is very interesting and dependent on him. He must cherish it. It can also mean that the family is prosperous and has many children. It also means that the old people's living conditions are better in their later years, and there are many children and grandchildren.