1. The scene where Mijeong walks down a bright market street after hearing that she cried profusely.
2. Here, we pass through a dark place, and at this time, the mother's back is completely dark, as if she is passing the border between life and death.
3. Unlike the crowded and bright market in the first scene, afterward there was no one and the mother was alone on the gray screen...
A composition very similar to the commonly known threshold of death... It's just art.
Of course, it could be overindulgence, so just accept it.