適得其所 [适－－－]

Jyutping sik1 dak1 kei4 so2
Pinyin shì dé qí suǒ

Definitions (CC-CEDICT)
  1. exactly what one would wish
  2. to find one's niche
Definitions (Wiktionary)
  1. phrase, idiomatic
    to be exactly what one wished to be