The four tones can be diagramed
as following: 1st Tone 2nd Tone 3rd Tone 4th Tone |
Tone marks are placed on toop the main vowel of syllabe. The main vowel can be incetified according to the following sequence: a- o- e- i- u- ü. For instance, in hao the main vowel is a; in luo, the main vovwel is o. |