How to pronounce 五一 in Cantonese (2 out of 3):

由於係五一嘅關係
Because it's a five-to-one relationship.

Cantonese Sentence Breakdown

由於 jau4 jyu1
because of
hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
五一 ng5 yat1
May Day
koi3
indignant
generous
to sigh (with emotion)
關係 gwaan1 hai6
(noun) connection