「大海撈針」

(pos:語句)
<explanation>
yue:形容極難揾到
eng:almost impossible to be found; looking for a needle in a stack of hay; literally: fishing for a needle in the sea
<eg>
yue:你想喺度揾翻地鐵度遇到嗰個人？根本就係大海撈針。 (nei5 soeng2 hai2 dou6 wan2 faan1 dei6 tit3 dou6 jyu6 dou2 go2 go3 jan4? gan1 bun2 zau6 hai6 daai6 hoi2 laau4 zam1.)
eng:You want to find someone you met on the train here? It is like finding a needle in a haystack.