The "Dong" in "Dong" refers to "Dong Yun", which is the rhyme part of "Ping Shui Yun" (also called "Poetic Rhyme") in Song and Jin Dynasties.
"East" is called rhyme, which is the representative word of this rhyme. There are many words in Dong Yun, and their * * * similarity is the same vowel, such as 15 wind, qi, insect, bow, east, palace, red, Weng, tong, tong, poor, copper, tong, rong, rainbow and so on.
Although the vowels in modern Chinese are not exactly the same, they all belong to Dong Yun. If it is a metrical poem, these words can rhyme.
"One" refers to the order of Dong Yun in Ping Shui Yun. Pingshui rhyme is divided into 106 rhyme according to the four tones of Ping, Shang, Qu and Ren. Among them, because there are many flat words, it is divided into two parts, and Dong Yun is the first rhyme of Shang Ping.
The enlightenment of rhythm is the enlightenment reading for training children to cope with and master rhythm.
According to rhyme, it includes astronomy, geography, flowers and trees, birds and beasts, figures and artifacts.
From single word pairs to double word pairs, three word pairs, five word pairs, seven word pairs to eleven word pairs, phonology is harmonious and catchy, from which pronunciation, vocabulary and rhetoric training are obtained.
From single words to multiple words, it reads like singing. Compared with other three-character and four-sentence structures, it is more attractive. This kind of reading is unique and enduring in the enlightenment reading.
Since the Ming and Qing Dynasties, books such as Dream-seeking Parallel Sentences and Liweng Duiyun have been written in this way and have been widely circulated.