How to pronounce 紅包 in Cantonese (4 out of 6):

每用一個紅包可以便宜4元
It's $4 for each red bag.

Cantonese Sentence Breakdown

mei5
each
jung6
to use
to employ
to have to
to eat or drink
expense or outlay
usefulness
hence
therefore
to apply
to operate
function
to spend
to make use
to serve as
to eat
to drink
with
to need
to exert
effect
with this
一個 jat1 go3
a; one
紅包 hung4 baau1
red envelope
可以 ho2 ji5
(adjective) so so
便宜 pin4 ji4
cheap; inexpensive
petty gain
jyun4
unit of money (in PRC: Chinese yuan, in USA: dollar, etc)
primary
the first
origin
head
eldest
the Yuan Dynasty
a surname