How to pronounce 關子 in Cantonese (7 out of 9):

不過賣個關子
But sell the lock first.

Cantonese Sentence Breakdown

不過 bat1 gwo3
however
maai6
to sell
to betray
to spare no effort
to show off or flaunt; an alternative form for 鬻, sell
child
nourish
go3
individual
this
that
size
classifier for people or objects in general or an action
indicates approximation when placed before numbers and after a verb
adds emphasis when added before a complement used with a verb
size
height
one
possessive particle
ten thousand dollars
bucks
關子 gwaan1 zi2
key point
sin3
early
prior
former
in advance
first
for now
ancestor
pioneering
only then