Cantonese's Consonants

There are 20 consonants in Cantonese, they can be related in term of how the sound is produced:

b, p, m, f like those in English speaking, distinguished by using the lip.
The particular one is ng. It is hard for English speaking people as it is using the nose. Some phonetic representation using 'ŋ' instead of 'ng' but using ng is easier to input from the keyboard.
d, t, n, l and particularly n and l is very hard to distinguish if not listen with the most attention. Same as d and t. They use mainly the tongue to produce sound. For English speaking people, it is easy as m and n are very common consonants.
w, gw and kw are very close. But gw and kw are relatively more difficult to differentiate but listen to how the vocal cord produce that sound. gw is a lot heavier, more solid. kw has more flow of air.
ts or c, dz or z and s has more air to flow out through the teeth and z is more solid while s is more light.
k and g is like a pair as if kw and gw. They are close. g is heavier or more solid and k is more flow of air. The difference between k and kw or g and gw is the w, the formation of sound with w means more around the mouth.
j and h are the silent pair. They product light sound starting like 'j'ay and 'h'ide. A gently flow of air through the mouth and or nose.
b,p,m,f,t,d,n,l,j and h count to 10. k,g,kw,gw,w,ts or c,dz or c, s and ng count to 9. Adding the null or no consonant will be a total of 20. A perfect even number of 20 consonants of cantonese.

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