How to pronounce 氾濫 in Cantonese (2 out of 4):

首當其衝就係呢個毒品氾濫
The first thing that came up was the drug flood.

Cantonese Sentence Breakdown

首當其衝 sau2 dong1 kei4 cung1
(idiom) The first to get hit (in a battle etc.)
就係 zau6 hai6
it is; exactly
呢個 ni1 go3
this
毒品 duk6 ban2
drug
氾濫 faan3 laam6
flooding; spreading; overflowing