First of all, a brief introduction.

1, when you pronounce A, your mouth opens wide, and when you pronounce O, your mouth becomes round. E, e, e in the small mouth, I in the clothes, U in the crow, U plus two points is U; The cock crows and has a round mouth. White goose looks in the mirror and has a flat mouth, eee. Mom hangs clothes and aligns them up and down. A crow has a small mouth. Small fish blow bubbles, and their mouths are flat.

2. A little girl with a round face has a pig's tail with aaa on her right, and a rooster has a high voice, a low voice, a high voice and a low voice.

3, Xiao ü is very proud, with his eyes on it, and Big Y helps him to take off his proud hat; Butterflies fly on the head of a chicken jj, seven balloons float in the sky QQ, watermelon princess XXX, 9-character GGG, a machine gun KKK, a chair HHH；; ; Croissants with round face and big mouth aaa.

Second, Pinyin

1, Pinyin is the process of Pinyin Festival, that is, according to the composition of syllables in Mandarin, initials and finals are quickly and continuously spelled and combined with tones to form a syllable. Chinese Pinyin (Chinese Pinyin alphabet) is the Latin scheme of Chinese characters in People's Republic of China (PRC).

2. It was studied and formulated by the Chinese Pinyin Scheme Committee of the former China Language Reform Commission (now the State Language Commission) during the period of 1955 to 1957 language reform. This pinyin scheme is mainly used to mark the pronunciation of Putonghua and Chinese as the phonetic symbol of Chinese characters. Some overseas Chinese areas, such as Singapore, use Chinese Pinyin in Chinese teaching.

3. In September 2008, Taiwan Province Province, China decided to change the policy of Chinese Pinyin translation from "universal Pinyin" to "Chinese Pinyin", and all parts related to Chinese-English translation will require the use of Chinese Pinyin, which will be implemented from 2009. Chinese Pinyin is a tool to assist Chinese pronunciation.