Traditional Chinese is used in this product. In this product we are comparing Cantonese monophthongs /u/ /o/ and diphthongs /ui/ /oi/ in 8 sets of compairsons, each with 2 minimal pairs of examples. 16 pairs of minimal pairs in total. This product suits best for students who are hard of hearing, who have phonological disorders or who have dialectal speech, or who want to have accent corrections. Goal: Phonological awareness, auditory discrimination, speech production, literacy ----------------