廣東話音韻關係

除了廿個聲紐外，五十三個音韻之中的元音關係如下:

元音可帶尾音如 n, m, ng, p, t, k. 複合音則不帶尾音。

HEA

Cantonese has the sound HEA. Proper vowel and consonant should be 'he'. It is not the same as the English's pronunciation of the pronoun 'he'. The vowel 'e' sounds like 'er' and so most HK people spell it as 'ea' which is like 'E'+'A' and 'A' actually sounds like 'R'. It is hard to follow some STANDARD.

The group of 'e' vowel's characters include 啤(be), 咩(me), 啡(fe), 爹(de), 呢(ne), 嘅(ge), 遮(ze), 車(ce), 些(se) and 爺(je). 'he' has no character but it looks like the sound comes from 係嘅切 which is the chinese way to spell the sound. It uses the consonant of 係 which is 'h' and vowel of 嘅 which is 'e'. Since 切 means cut, so the 'he' or 'hea' (unofficial) means cut the 係嘅, both means right. Therefore the meaning of 'he' or 'hea' is not having or doing the right thing. According to some current interpretation, wasting time doing some useless activities, no particular goal for anything.

Cantonese evolves long time ago, over thousands year and each sound is embedded in the character and the sound implies certain meaning, feeling and expression.

故弄玄虛

故弄玄虛 means meant to make it hard to understand and unable to conceive.
故 can mean past, but here mean the reason, used as adverb, deliberately, meant to.
弄 means play, make it.
玄 means too complex to understand.
虛 is empty, cannot be grasped