陳穀子爛芝麻 (zan6 guk1 zi2 laan6 zi1 maa4) — old-time things or talk (gossip) that are of no particular importance in Cantonese
zanˍ₆陳gukˉ¹穀ziˊ²子laanˍ₆爛ziˉ¹芝maaˎ₄麻简 陈谷子烂芝麻
Mandarin Pinyin: chen2 gu3 zi5 lan4 zhi1 ma5
Meaning of 陳穀子爛芝麻
nounold-time things or talk (gossip) that are of no particular importance