細膩無蝕本 [细腻无蚀－]

Jyutping sai3 nei6 mou4 sit6 bun2
Pinyin xì nì wú shí běn

Definitions (Wiktionary)
  1. phrase, Min-Nan, idiomatic
    one won't be at a loss by being careful; one cannot be too careful
    (syn.) 張持無蝕本, 张持无蚀本