"OK" is the most widely used English in the world, but English language experts and language historians have so far failed to confirm the origin of "OK". Yan Yumin, a freelance writer, recently wrote in Financial Weekly that two or three scholars pointed out that the usage of "OK" was originally created by andrew jackson, the seventh president of the United States, after consulting many books about the development of English and the evolution of English characters. Yan introduced in the article that Jackson was born in 1767 and was elected president of the United States at the age of 6 1. When President Jackson examines the official document, if he thinks there is nothing wrong with the content and can send it back to various departments for implementation, he will write the words Oll Korrect on the official document, which means "completely correct and feasible". After a period of time, after the subordinates understood and became familiar with the meaning of the word, Jackson would only feature the word OK for the only family. Oll Korrect is essentially a spelling mistake of All Correct, so why does an open American president make a spelling mistake? Yan Yumin tried to give an explanation from the perspective of the history of Chinese teaching in the United States. He said that English phonetics was a discipline founded and developed in the early 20th century, but Jackson probably didn't notice that the monosyllabic letter C has two pronunciations, namely [S] and [K]. So when he spelled the word Correct, he might think that the letter [K] should be the letter K, so he wrote Korrect. As for why Jackson wrote All as OL, the article explains that when phonetic teaching was not developed, English speakers, including British and American nationals, thought that A had only two pronunciations, namely [[〔ei〕] and [a:], but they didn't know that A could pronounce the vowel O before the consonants L and W. The article speculated that President Jackson therefore pronounced ALL as OL. The article points out that in this way, Jackson wrote all the correct ones as Oll Korrect, and once the wrong spelling was established, the abbreviation OK was born naturally. After more than 200 years of circulation, OK has become a common word in English-speaking countries to express "nothing" and "no problem", and it has penetrated into the daily language of many countries that promote Britain as a second language. There is another saying: the earliest use of "OK" is a postal worker in the United States. His name is Oder Klee, and the first letters at the beginning of his English name are "O" and "K". He has to deal with a lot of emails every day and sign his name to show that he has been accepted by someone to show his responsibility. However, due to the large amount of labor, it takes a lot of time to deal with it. In order to reduce labor intensity and save time, he changed his full name to the abbreviation "O K" in the email. His practice has been recognized and endorsed by people from all walks of life. Starting from 1944, American telecommunications companies also began to use this signature method as a confirmation of accepting telegrams. Just the signer, no matter what his name is, starts with what letter and signs it as "OK". Later, the word "OK" developed into a very popular phrase in daily life.