When do quatrains and rhymes appear?

Quatrains, also called truncated sentences, broken sentences and quatrains, are short and pithy. It is a popular genre of Chinese poetry in the Tang Dynasty and belongs to a form of modern poetry. The word quatrains first appeared in the Qi and Liang Dynasties in the Southern Dynasties. Chen Xuling's Yu Tai Fu has four five-character and four-sentence poems. I don't know the author's name, and the topic is "Ancient Jueju". At this time, quatrains refer to small poems with five words, four sentences and two rhymes, and do not require balance and harmony. Jue means "cut off", and the ancients used four poems with four quatrains to complete an ideological concept. There are two types of quatrains: quatrains and archaic styles. Rhythm only needs to be refined after the rise of rhythmic poetry. Ancient times existed long before the appearance of metrical poems.

Rhyme is a popular genre in Chinese poetry in Tang Dynasty, which belongs to modern poetry and is named because of its strict metrical requirements. There are three common types: five laws, seven laws and exclusive laws. Rhyme is the precious wealth of Chinese literature, which is of great significance. There are usually a few words to say.

Metric poems originated from Shen Yue's new style poems which paid attention to meter and duality in the Qi Yong period of the Southern Dynasty, and began to appear in the early Tang Dynasty. During the Wu and Zhou Dynasties, Shen Quanqi and Song created the Narrow Seven Laws, which matured in the middle and late Tang Dynasty. Rhyme requires the unity of the number of words in the poem, and each poem is five words and seven sentences, referred to as five laws and seven laws for short. The usual metrical poems stipulate 8 sentences each. More than 8 sentences, that is, 10 sentences, are called exclusive laws or long laws.