Guess the idiom Doraemon. Which idiom is the answer?

Let me talk about the concept of "five tones" first. China is an ancient civilization with a long history of music development, but ancient music has five tones, which is different from the West. If we compare the seven scales of western music, the pentatonic scale of ancient music in China is equivalent to do, re, mi, sol and la without the "Fa" and "Four" rising semitones. Of course, the five-tone roll call of ancient China music can't be the same as that of western music, which used "harmony, justice, delay and fairness" in the Tang Dynasty. In older times, it used "Gong, Shang, Jiao (pronounced jué), Zheng (pronounced zhǐ) and Yu". Therefore, if you pay a little attention, there are no two singing names "Fa" and "Si" in authentic China ancient music. For example, Jasmine in Jiangbei minor, which is still heard from time to time, is one of the ancient songs. If it is a roll call singing method, there will only be "duo, lai, mi, suo and la", and there will be no "fa and la". Famous ancient songs, such as "Man Jiang Hong" written by Yue Fei.

By the way, if it is found that the music song named "China Ancient Music" has the name of "Fa" and "Fa" scales, it is either an impostor or has been modified by modern people.

The pentatonic scale is the basic scale of ancient music in China, so there is the idiom pentatonic scale.

There is another explanation: the lack of five tones not only refers to some people's lack of musical sense, but also includes some people's defects in pronunciation. Especially in the national performing arts circle in China, it is often said that some people are not suitable for learning this art because they are tone-deaf. However, this tone-deaf is not the lack of musical sense of the five-tone "Gong Shang Jiao Zheng Yu", but "lips, teeth, nose and mouthpiece". For example, some people can't tell the pronunciation of the word Niu Liu. Reading Liu as a cow and reading men and women as rags is because of the lack of tongue and nose function.

Most of this "five-tone imperfection" can be gradually corrected through language professional training.