Classical poetry is a kind of poetic style as opposed to "modern style". Before the formation of modern poetry, all kinds of poetry genres except Chu Ci were also called ancient poetry and ancient style. This is written according to the practice of ancient poetry, and the form is relatively free, not bound by meter. Informal and straightforward. The rhyme foot is wide, except for the rhyme foot of seven-character white and bright sentences, which generally rhymes with other sentences. The rhyme foot can be flat, flat or variable. There is no limit to the length of space. Sentences can be unified into four-character, five-character, six-character and seven-character fonts, or long and short sentences can be mixed and changed at will, which is miscellaneous.
There are many ancient poems with five words and seven words, which are referred to as "five ancient" and "seven ancient" for short. Miscellaneous words range from one word to more than one cross, usually a mixture of three, four, five and seven words, mainly seven words, so they are customarily classified as seven ancient words. Since the Han and Wei Dynasties, Yuefu poems were originally accompanied by music, including songs, lines, songs and words. The Tang Dynasty imitated the previous Yuefu, such as Li Bai's Difficult Road to Shu, Du Fu's Three Officials, Three Farewells and Bai Juyi's New Yuefu, all of which were out of step and belonged to the category of ancient poetry. In addition, there were quatrains in units of four sentences before the Tang Dynasty, or "archaic quatrains", and there were also writers in the Tang Dynasty, which is different from the recent quatrains, which pay attention to flat and even lines.
There is an interactive relationship between ancient poetry and modern poetry in the process of development. In the late Northern and Southern Dynasties, some poems began to emphasize rhythm and duality, but they have not yet formed a complete rhythm, which is a form of transition from ancient style to modern style poetry, or "new style poetry".
Some ancient poems in the Tang Dynasty tend to be legalist. For example, Wang Bo's Tengwangge is an ancient poem, but it is flat and harmonious, with eight sentences, which are similar to two seven-character quatrains and two rhymes. After the Tang dynasty's metrical poems were finalized, the poets' ancient works were often integrated into the modern sentence pattern. Such as Wang Wei, Li Qi, Wang Changling and Meng Haoran, there are quite a few rhymes and couplets in the five ancient books. There are also many sentences in Bai Juyi's famous songs such as Song of Eternal Sorrow and Pipa Xing. However, some poets are consciously different from the modern style, often using awkward sentences and occasionally prose, and Li Bai, Du Fu and Han Yu have all created something. Later, scholars in Ming and Qing Dynasties consciously noticed the phenomenon that ancient poems were merged into regular sentences and strange sentences were used to avoid regular sentences. In Qing Dynasty, Wang Shiping thought that ancient poems were flat, so Zhao Zhixin, Weng Fanggang and others specially studied the tones of ancient poems. Their research has contributed to consciously distinguishing ancient and modern rhythms in poetry creation, but it seems far-fetched because it ignores the fact that ancient poems are mainly natural syllables, and even ridiculed as "it is useless not to treat them as secrets."