Trauma is widely believed to be intergenerational, while Van Alphen believes that trauma is essentially different between survivors of traumatic events and their children. The second generation of trauma groups has been surrounded by traumatic culture since they entered the world, so they have lost the possibility of understanding and reconciling with traumatic events. That is why the second generation suffers more. In order to recover from the trauma, they need to restore their identity to their parents. Taking the novel The Sound of One Hand Clapping as an example, this paper makes a case study to follow the process of Sonja, representative of the second generation. Sonja has been fragmented by trauma and finally reconciles with her parents. I will argue from Sonja’s case that the hidden history must be re-exposed and fully understood to repair the wound, which is necessary and achievable. (Chonbuk National University)