What is the symbolism of several basic images in Su Tong's "Rice"?

I think that in "Rice", in that period of war, the male genitals were constantly depicted, ugly depictions, not only to show that the five dragons in the city to mix the depression and pain caused by the psychopathology of the ugly, but also to use the male genitals borrowed from the enlisted men, a metaphor for the frequent wars at that time in China, the warlords, the invasion of Japan, the people in the heart of the repression and pain, and then the production of the dirty and ugly behavior. behavior.