一言難盡 (jat1 jin4 naan4 zeon6) — it is a long story [also], or there's too much to say about it in Cantonese
jatˉ¹一jinˎ₄言naanˎ₄難zeonˍ₆盡简 一言难尽
Mandarin Pinyin: yi4 yan2 nan2 jin4
Meaning of 一言難盡
nounit is a long story [also], or there's too much to say about it
noun一疋布咁長