To put it simply, according to modern Chinese, one or two tones are flat and three or four tones are vague. According to ancient Chinese, there are some Rusheng characters. For example: Germany, bamboo, stone, white and black. ...
There is a certain format in the use of flat and even words in poetry, which is called meter. Pingsheng and Silence refer to the poetic rhythm composed of Pingsheng. Flat tone is an attempt to dualize the four tones. Four tones are four tones in ancient Chinese. On the basis of four tones, the flat tone is summarized through incomplete induction. Flat refers to straight, flat refers to twists and turns. Up, down, in tune, the rest are flat.
The tones of ancient Chinese can be divided into four tones: flat, up (sh m 4 ng), falling tone and entering tone. "Flat" refers to the flat sound in the four tones; "Wrong" refers to the mistake of four tones, including the upper, lower and middle tones. The entering tone of Putonghua disappears, and the entering tone is classified as that the upper tone and the lower tone are in oblique tone and the upper tone is in oblique tone, which leads to errors in judging the horizontal tone of poetry in Putonghua.
According to tradition, the jade tune of Ming Dynasty, which releases vacuum, said: The sound level is not low, the sound is loud and strong, the sound is clear and sad, and the sound is short and urgent. Simply put, the key to equality is "inequality is equality".