1. The position of Yunmu(vowel)in Pinyin which can indicate how to pronounce each Chinese character is generally after that of Shengmu(consonant) .

2. The tone of each character can be indicated by the Yunmu(vowel) in the Pinyin.

3. The Yunmu(vowel) " ü" , "ie", " üe" and " ün" should be changed into "u" , "e"," ue" and "un" each if they are after Shengmu(consonant) "Y" but the pronunciations are not changed.

4. The Yunmu(vowel) " ü, üe,ün" should be changed into "u, ue, un" each if they are after Shengmu(consonant) "j, q, x" but the pronunciations are not changed.

5. If there is no tone mark on Pinyin then the character should be read lightly.