Lucky stars are lucky, thousands of businesses are prosperous, lucky stars are shining high, and everything goes well. In a couplet, it is necessary to distinguish which part is the upper couplet, which part is the lower couplet and which part is the lower couplet. Generally speaking, it can be distinguished by leveling, that is, look at the last word of this couplet, the last word of the upper couplet needs leveling, and the last word of the lower couplet needs leveling. For example, in this couplet, Wang has four tones, and four tones belong to it. So the upper part of this couplet is the upper part and the lower part is the lower part. When pasting couplets, the upper part needs to be pasted on the right hand side and the lower part needs to be pasted on the left hand side.
Couplets should be "paired", that is, they are composed of upper couplet and lower couplet. The number of words in the upper and lower couplets must be equal and the content should be consistent, that is, the upper and lower couplets can be "linked" (parallel), and two unrelated sentences can not be combined together to form a couplet. Each couplet has its own specific meaning. When writing couplets, it is generally considered to be the bottom couplet with profound meaning, and the value of the top couplet is more of a guiding role. The upper and lower links are basically causal, because it is the upper link and the fruit is the lower link.