What are the advantages of Feng Wang's technique of repeating chapters and sentences?

Reduplication is widely used in poetry, which means that the syntax of each chapter is basically the same, only the corresponding words are changed in the middle and sung repeatedly. Its function is to deepen the impression, render the atmosphere, deepen the main body of the poem, enhance the musicality and rhythm of the poem, and express the feelings incisively and vividly. Overlapping means that sentences with the same meaning overlap back and forth. It is often used to express the strong feelings of the characters circularly and give people.