Of course, the essential relationship between parents and children is the karmic relationship in the past. People who owed you in the past (not only money and feelings, etc. ) will unconsciously return it to you (that is, the kindness of parents). People who owed them in the past will unconsciously ask you for it (that is, the debt of their parents). A good relationship was mutually beneficial in the past, and a bad relationship was mutually harmful in the past.
The improvement method is 1, more mutual benefit, 2, more good deeds, 3, more Buddhist thoughts, repentance, and elimination of old karma.