Where should the couplets be posted?

The first couplet of couplets should be posted on the left, starting from the position advocated in ancient times. In ancient China, "Left" was the dominant position. So couplets should be on the "left" side.

The left side here refers to the position of the couplet when the back is facing the door. If the position of the couplet is taken as the standard, that is, when facing the frontispiece, it is on the right side, and the couplet is called as the direction for the time being.

Although the antithesis of extended data couplets has something in common with poetry, it is more demanding than poetry. Couplets can be divided into wide pairs and narrow pairs. Wide pairs can only be formed if the contents of the upper and lower couplets are related, while narrow pairs should be written in strict accordance with the standards of Li Weng Dui Yun.

Wide couplets are often used in practical couplets, but narrow couplets are rarely used, because the requirements for antithesis are too strict, which fetters people's thinking and is suspected of hurting meaning because of the text. Besides distinguishing from the content of couplets, it is more important to judge from the flat sound at the end of couplets. It is strictly stipulated in couplets that the last word of the first couplet should be in a flat voice and the last word of the second couplet should be in a flat voice.

Later generations called this rule "flat rise and flat fall". It must be noted that the "four tones" in ancient Chinese and modern Chinese are somewhat different. Since the popularization of hanyu pinyin and the use of Beijing pronunciation as the national common language, the level of the same Chinese character has changed.

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