In Cantonese, ng can be pronounced or not pronounced when it is used as a consonant, but not in all cases, just most.
Er: ak
Cataract: ai
Quarrel: aai
The above three characters have zero consonants. sun is pronounced as the first tone! It's like acid in Cantonese just like smoked in Mandarin." The same pronunciation of Chinese medicine has a flavor called "Sun" bamboo fungus".
1. Guangzhou sound refers to the pronunciation of Cantonese, not the local accent. Many people confuse these two concepts, and some friends who are new to Cantonese often ask the question, "Where is the most standardized Cantonese, with the most authentic accent?" In fact, this question itself is wrong, because the Cantonese accent is a localized accent characteristic produced by the local culture of the different regions where Cantonese is spoken. No matter what answer we give, it is a manifestation of the subtle existence of some regional discrimination, and it is very common to erase and belittle the culture of other places while attaching importance to a specific region. If we want to comment on whether a person's accent is "standard" or not, we must accept the objective condition that it is limited to the local accent, and not extend its scope of application.
2. The local accents of some regions can affect the standard pronunciation of Cantonese. We cannot use any one local accent as the standard model accent, and we should avoid being disturbed by accents that affect the standard pronunciation of Cantonese, rather than following the example of a particular regional accent. Those with accents should not feel frustrated, as this is a result of such regional heterogeneity arising from different regional cultures, which is irrelevant as long as it does not affect the standardization of pronunciation.