This is an epub sound book for learning Pinyin. The pinyin of a Chinese character is a complete syllable with a tone, and it represents the pronunciation of the Chinese character. Under the same complete syllable, usually there is some (not more than 5) similar pinyin with different tones. This ebook provides many simple Chinese characters (with such similar pinyin), their corresponding pinyin, English meanings and pronunciation audio. A learner of the Chinese language can use this ebook to learn pinyin and its standard pronunciation besides increasing his vocabulary of Chinese characters.