The spring is bright and the weather is sunny.

The next sentence is: the moonlight is hazy and the singing is wonderful.

The first part: the spring is bright and the weather is sunny.

Part two: the moonlight is dim and the singing is wonderful.

Couplets vary in length, only one or two words are short; It can be hundreds of words long. There are various forms of couplets, such as pairs, pairs, flowing pairs, couplets, set sentence pairs and so on.

Couplets must have the following characteristics:

1, words are equal and sentences are consistent. In addition to deliberately leaving a place for a word to achieve a certain effect, the number of words in the upper and lower couplets must be the same, neither more nor less.

2. Be straightforward and have a harmonious tone. The traditional habit is to "pucker up and fall flat", that is, the end of the last sentence of the first couplet is puckered up and the end of the last sentence of the second couplet is flat.

3. Parts of speech should be relative and in the same position. It is generally called "virtual to virtual, real to real", which means that nouns to nouns, verbs to verbs, adjectives to adjectives, quantifiers to quantifiers, adverbs to adverbs and related words must be in the same position.

4. Be content-related, from top to bottom. The meaning of up and down links must be interrelated, but they cannot be repeated.

In addition, the traditional practice of hanging couplets must be written straight and pasted vertically, from right to left and from top to bottom, and cannot be reversed.