A few studies have examined phonetic variation among EFL learner vowels and consonants—mainly college students and middle school students—from southern or northern China dialects %%% %%%. This study will continue to focus on an experienced English learner—an university English teacher of Jiangxi province in South China—to test such hypothesis that whether there exist some acknowledged pronunciation errors especially in uttering some certain English vowel(s) and nasal consonant(s) and further there is a kind of role the speaker’s southern China dialect plays in pronouncing them. This is posed under the assumption that the expected pronunciation acoustic characteristics will be acoustically and perceptually affected by regional dialect. The results suggest that these differences may be less related to non-native speakers’ English-language experience and more related to differences in both the configuration of the vocal tract and vowel duration.