| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | diphthong | Mandarin-speaking countries | Less relevant as Mandarin does not have diphthongs in the same way English does | 1 |
| 2 | diphthong | Mandarin-speaking countries | Diphthongs are not present in Mandarin pronunciation and are not part of the language's phonetic system. | 1 |
| 3 | diphthong | Mandarin-speaking countries | Not a prominent concept in Mandarin phonetics and pronunciation | 1 |