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 and Yang. Since coming to Australia the Vo family has been very fortunate. As well as getting away from their communist county to a free one, Toan experiences success in school and later on as an actor. Vo Kin Tueyt believes that in order to restor