Pinyin letters refer to the letters used in pinyin writing, and also refer to the 26 Latin letters used for phonetic notation of Chinese characters in the Chinese Pinyin Scheme. Pinyin letters were invented by the Egyptians.

Before there were pinyin letters, Egyptians drew whatever they saw, so they created many pictures and words. In order to facilitate writing, they chose more than twenty simple symbols instead of words, that is, Latin letters that can be pinyin. The pinyin letters we use now are developed from Latin letters.

Extended data

23 letters:

b p m f d t n l g k h j q x zh ch sh r z c s y w

24 vowels, of which:

Six single vowels: a o e i u v

Nine vowels of ai ei ui ao ou iu ie ue er

Five nasal vowels an en in un vn

Four eng-eng vowels in the posterior nasal cavity.

16 overall reading:

Chi Chi Poem Days Ci Yi Wu Yu Ye Yuan Yue Yin Yunying