Practicing of the vowel  most commonly spelled "i" is done by reciting a few of the following differences: his versus is, hit versus it, hill versus ill. By not letting the back of their tongue touch the palate, native speakers of Asian languages (Chinese, etc.) can avoid adding a  before the  for example in speaking "yin" instead of "in".
The pronunciation of the vowel "i" is practiced by reciting these distinctions: his versus is, hit versus it, hill versus ill. By not allowing the back of their tongue to touch the palate, native speakers of Asian languages (Chinese, etc.) can avoid adding a glottal stop before the vowel in words like "yin" instead of "in".