Spring Festival couplets have a long history. It is said that they originated from Meng Chang, the master of Shu after the Five Dynasties. On the peach symbol board at the door of his bedroom, he wrote: "Come in the New Year, the first day is Changchun", which means "Write the peach symbol" (see Shu Lang). This is the earliest couplet in China and the earliest Spring Festival couplets. The second part is to confront foreign things, or to agree with their meaning and refute their meaning. You can't say no to meaningful antitheses and prose couplets. Classification by purpose 1. General couplets-Spring Festival couplets II. Special couplets-tea couplets, birthday couplets, wedding couplets, elegiac couplets, industry couplets, aphorisms, gift couplets and question-and-answer couplets are classified according to the number of words 1 Short couplets (within the cross) 2. Zhonglian (within 100 words) 3. Long couplets (within 100 words) are classified as 1 according to rhetorical skills. Binary association: speech pair, material pair, right pair, opposition pair, work pair, wide pair, flowing pair, palindrome pair and top pair. 2. Rhetoric couplets: metaphor, exaggeration, backchat, pun, rhetorical question and homophonic. 3. Skill association: embedded words, hidden words, compound words, overlapping words, radicals, word analysis, word splitting and numbers. According to the source of couplets, 1. Couplet: a couplet composed entirely of ready-made sentences in ancient poetry. 2. Couplets composed of ancient Copybook for calligraphy articles and characters. 3. Sentence-picking couplets: Couplets made by picking antithetical sentences directly from other people's poems. 4. Create couplets: couplets independently created by the author.