After investigation, the country's red-headed documents did not stipulate that they should be read like this. On the contrary, according to the relevant standard of Putonghua, "1" should be pronounced as "Yi". Then why is the number pronunciation inconsistent with the provisions of Putonghua in people's work and life? We should look for reasons from history.
I remember when I was a child, there was a signalman in our village. When he came back from visiting relatives, he told us that "1234567890" in the army should be pronounced "Yao 23456 turned to the dog hole". I didn't understand why. I thought the messenger was limping on the battlefield, afraid of drilling a dog hole. Later, I learned some knowledge of acoustics and phonetics before I understood the truth.
For a long time, this special numerical name originated in the war years.
Soldiers in the revolutionary army come from all corners of the country, and it is inevitable that they will speak with a southern accent. The pronunciation of "2" is the most confusing. We know Shi Xiangyun in A Dream of Red Mansions. This pronunciation is not good, so he calls "Second Brother" "Brother Ai". Many southern soldiers pronounce "2" as "ni" or something. In order to avoid confusion in pronunciation, signalmen use "two" instead of "two" in Putonghua. Similarly, southerners also have difficulty in nasal sounds, so "0" should be pronounced as "hole" instead of "ling". In fact, when playing mahjong in many places, we also like to pronounce "cake" as "bucket" or "hole". Also, in many dialects, there is no distinction between "B" and "P", and "P" is a plosive sound with clear pronunciation, so "8" is pronounced as "fear".
Another more important reason is the frequency of Chinese vowels. It is found that "I" appears in Chinese vowels with the lowest frequency and the worst articulation. Compared with "A", the power of "I" is only half that of "A", which is at least 3 decibels worse. As we all know, there is a lot of noise on the battlefield, and the other party may not hear clearly when the signalman sends an "I". Poor communication will even cause a lot of troubles in life. If it happens on the battlefield, it may cost blood and life. So everyone came up with a good way to completely replace the "I" sound. Because "Yao" is a small meaning in Chinese, "1" is pronounced as "Yao" and "7,0" is re-recognized as "Zhuan Kong" according to its shape. The most noteworthy is "7". Because the pronunciation of its initial letter "q" is extremely unclear, it is changed to "Guai", and the vocal cords of the consonant "g" have gained valuable clarity. Similarly, "9" is also a "dog".
After the founding of New China, due to the limitation of communication technology, this special pronunciation changed from military to civilian. Today, with the rapid development of information industry, Mandarin is becoming more and more popular. In the folk, the special pronunciation of numbers has basically completed its historical mission.
Then why did Yao survive? There are two reasons for this. First, the pronunciation problem of the initial "I" still exists; Second, "1" is the most commonly used number in life. Because of this, people are used to interpreting "1" as "Yao" on many occasions. This is the origin of "what is zero" and "what is nine".