Overlap often appears in various styles. According to the form, it can be divided into word repetition, sentence repetition, paragraph repetition, continuous repetition and interval repetition. For example, "Even if the snow-capped mountains turn into butter/are occupied by officials/even if the sea turns into milk/we have no right to have a drink/"contains the characteristics of repetitive sentences. Repetition and parallelism have the same or similar grammatical structure, related meaning, consistent tone and the same homonym, which can constitute parallelism repetition. Otherwise, repetition cannot be regarded as parallel.