Are dream preface and fishing song aphorisms? If not, talk about the meaning of these two poems.

Both are epigrams. Such as Meng Ling is a piece of music created by Zhuang Zong in the late Tang Dynasty, because his words are: "Dream, dream, the waning moon fades away"; Yuefu therefore named Qupai after the word "like a dream". Also known as Yixianzi, Yantaoyuan or Bimei. * * * 33 words. The full text mainly consists of six sentences. Examples are as follows: Zhong Yi Zhong Pingping. People in the middle are as thin as poplars. Fishermen's songs, also known as fishermen's fathers, fishermen's music and fishermen's words, were originally the names of Tang, and later people wrote words based on them and became the names of epigrams. It was originally monotonous, with 27 words and 4 rhymes. There are three words and two sentences in the middle.