What is the rhetorical function of duality, begging on your knees?

1. From the formal point of view, antithetical sentences are neat and symmetrical, and their phonology is harmonious and sonorous. They are catchy to read, pleasant to hear and eye-catching.

2. From the content point of view, it puts things with similar, opposite or related meanings together, or complements each other (right), or contrasts, complements each other (right), or connects with each other in series, such as running water (series), which can express the content more intensively, describe the events of people more vividly, explain the problems more thoroughly and express feelings more smoothly.