2, four tones, called flat, up, go, enter. Except for the flat tone, the other three tones have high and low changes, so they are collectively called Legato.
3. Flat tones in ancient Chinese: The tones in ancient Chinese can be divided into four tones: flat, 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.
Extended data:
1. Putonghua Rusheng disappeared, and Rusheng was classified as two tones in Nuo Sheng and Yin and Yang tones in Pinghua, which led to errors in judging poetry tones in Putonghua.
2. According to tradition, a flat tone means a flat tone, a rising tone means a rising tone, a falling tone means a falling tone, and an entering tone means a short tone.
Flat voice, flat road, mo di ang,
The voice above shouted fiercely and strongly:
It's a long way to go, Xiu Yuan,
The urgent voice is short and urgent.
References:
Plane-Baidu Encyclopedia