Which is correct, couplets or couplets?

Couplets are correct, but couplets are wrong. Figures and pairs are pictophonetic characters with the same pronunciation, but different shapes and meanings. This word is used for independent items such as fabrics and pictures, and its meaning is slightly the same. When auxiliary words are used as quantifiers, they must have the characteristics of complete pairs, and their meanings are similar to those of double and pair. Because the complete couplet is divided into upper couplet and lower couplet, and it is flat and has relative meanings, it is a couplet. Couplets are one of the traditional cultures of the Han nationality. They are antithetical sentences written on paper and cloth or engraved on bamboo, wood and columns. The antithesis of couplets is neat and even, which is a unique cultural and artistic form of Chinese language. According to legend, couplets originated from Meng Changjun, the master of Shu after the Five Dynasties. Couplets are the traditional cultural treasures of Han nationality in China. Couplets, also called couplets, are named after the pillars hung in halls and houses in ancient times. They are commonly known as even characters, couplets, couplets and doors. The name of couplets began in the Ming Dynasty. It is a kind of dual literature, which originated in Fu Tao, and it is a national style that uses the characteristics of Chinese characters to write. Its wonderful combination with calligraphy has become a colorful artistic creation of the Chinese nation. Parallel prose and rhyme are two direct sources of couplets. In the process of its own development, couplets have absorbed the characteristics of ancient poems, essays, lyrics and songs. Therefore, the sentence patterns used in couplets include ancient poems, prose sentences and parody sentences in addition to regular poems and parallel prose sentences. Different sentence patterns have different metrical patterns and different leniency. Among them, the sentence pattern of rhythmic poetry is the most strict, while the sentence pattern of ancient verse has no restrictions except at the end of the sentence.