Part three of "Only the Heart" is about the highs and lows of the Vo family and looks at the idea of "Yin and Yang". The grandmother, Vo Kim Tuyet is depicted in part three as a spiritual person who believes strongly in"Yin and Yang". She makes predictions about the events which unfold later in the story. She predicts that "evil" or bad things will happen in order to restore the balance of Yin …showed first 75 words of 275 total…

…showed last 75 words of 275 total…her legs for the rest of her life. This is a sign that evil has set upon her for her entire life and no amount of good can restore the balance and reverse the damage done. Not even when Linh gets revenge by seeing Tang killed. On the other hand, Toan experiences the opposite. Everything that happens to Toan is for the better. He does well at school and later becomes a successful TV actor.