This scene shows their life before the Khmer Rouge. It shows Loung Ung dancing along with her family while listening to music. It shows the family having fun before the Khmer Rouge came and changed everything.
This scene shows how Loung Ung had to do hard child labor in order to get better food portions.More importantly though,she had to do this kind of labor in order to survive.
This scene is showing Loung Ung and her siblings who survived praying and thanking the gods that they survived. They were mourning the rest of their family that didn't. Such as Geak, Ma, Pa, and Keav. They are on their knees to worship Buddha and content to practice their religion freely.