the use of ⟨h⟩ to signal consonantal aspiration: e.g. pinyin ⟨pi⟩ or Wade–Giles ⟨p'i⟩ corresponds to ⟨phî⟩,
the use of a Fraktur letter z ⟨𝖟⟩[2] distinct from Roman ⟨z⟩, and
the use of italicized consonants distinct from their normal forms.
Comparing words in the Legge system with the same words in Wade–Giles shows that there are often minor but non-systematic differences, which makes direct correlation of the systems difficult.
Vowels
The system uses the following vowels and semivowels:
a â ă e ê i î o u û ü w y
Vowel letters also occur in various digraphs, which include:
âi âo âu eh ei ih ui
Consonants
Legge transcription uses the following consonants: