七折八扣 (cat1 zit3 baat3 kau3) — thirty percent off and then twenty percent off, which means a huge discount in Cantonese
catˉ¹七zit˗₃折baat˗₃八kau˗₃扣Mandarin Pinyin: qi1 zhe2 ba1 kou4
Meaning of 七折八扣
nounthirty percent off and then twenty percent off, which means a huge discount