| 1 | Sound changes fall into two types: descriptive sound change and historical sound change. | |
| 2 | In Gaoyou dialect, the phenomenon of sound change has representativeness in Jiang-huai dialect. | |
| 3 | Hmong of Songtao Daxing Town; morphological process; age-related difference; sound change; loanwords from Chinese. | |
| 4 | The tonal modification, which is the main tonal change in a language, is a commom phenomenon in every tone language. | |
| 5 | Overlapped sound change theory regard as a special sound change type of discrete sound change put forward by Prof. |