1. Pentatone and Qilu refer to the pentatonic scale and the seven-syllable poem. One is music and the other is poetry, both are ancient Chinese art forms.

1. The pentatonic scale is the pentatonic scale. Ancient literature is usually called "pentatonic", "pentatonic", etc. It is based on the order of fifth degrees, starting from Gong Yin to Yu Yin, in order: Gong - Shang - Jiao - Zheng - Yu; if arranged in order of pitch, it is: 12356 Gong Shang Jiao Zheng (zhǐ) Yu. In the Tang Dynasty, "He, Si, Yi, Chi, Gong" were used.

2. Qilu is the abbreviation of seven-character rhymed poetry, which refers to poems with seven characters and eight sentences that conform to the standard of rhymed poetry. It is a type of rhymed poetry. Rhymed poetry belongs to the category of modern poetry and is named because of its strict rhythm. The number of words in the poems is required to be uniform, consisting of eight sentences, each sentence has seven words, and every two sentences is a couplet. The last four couplets are divided into first couplet, chin couplet, neck couplet and tail couplet. The middle two couplets require confrontation.

Extended information:

1. Although it only uses five notes, our country's folk songs have their own charm. For example, although the Jiangsu folk song "Jasmine" and the Sichuan folk song "Kangding Love Song" or "Horse Racing on the Mountain" use the pentatonic scale, they are also long-lasting and full of charm. Because the pentatonic scale is a characteristic of Chinese folk songs, many famous composers compose music in the pentatonic scale.

Early examples include "Song of the Four Seasons" and other interludes composed by He Luting for the movie "Road Angel". Many songs composed before and after liberation such as "Unity is Strength", "Battle Hymn of the Chinese People's Volunteers", "Socialism is Good" ", "The red sun that never sets on the grassland" and "Learn from Lei Feng's good example", etc. are too numerous to mention.

2. The rise of seven-character verse was later than that of five-character verse. It originated in the Southern and Northern Dynasties, sprouted in the new style poetry of Qi and Liang Dynasties, and was finalized in the early and prosperous Tang Dynasty.

It was not until Du Fu that the seven-character verse showed its potential as a poetic style and opened up the world of art. Du Fu comprehensively opened up the realm of rhymed poetry. Current affairs and politics, life experience, customs, cultural relics and historic sites are all integrated into precise rhythms, raising the value of this poetic style to a level where it can stand side by side with ancient poetry and quatrains.

From Du Fu to the mid-Tang Dynasty, the seven-character rhythm style failed to bring forth new ideas. In the late Tang Dynasty, seven-character rhymed poetry opened up a new situation. Wen Tingyun, Li Shangyin, and Du Mu, these seven-rhythm masters, not only modified the form of rhymed poetry, but also transformed the temperament of rhymed poetry, advancing the art of rhymed poetry to a new stage.

The seven-character rhymed poems of the Five Dynasties period were not good at all. The seven-rhythm creation of the Song Dynasty continued the innovative efforts of Du Fu and the poets of the middle and late Tang Dynasty, and gradually took shape in the hands of the "Jiangxi School of Poetry". It embarked on a new path of being good at theory and using discussion as poetry, and there are many excellent works. After the Yuan, Ming and Qing dynasties, seven-character rhymed poetry gradually declined.

Baidu Encyclopedia - Pentatonic Scale

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