The choice between "a" and "an" depends on the sound of the following word:
is used before words that begin with a vowel sound. Since "Asian" starts with a long "A" sound ($/ˈeɪ.ʒən/), it requires "an." A is used before words that begin with a consonant sound. Example: asian shemale erect
"I saw Asian shemale erect a new billboard." (Using 'erect' as a verb). The choice between "a" and "an" depends on