摸著石頭過河 [－着－头过－]

Jyutping mo2 zoek6 sek6 tau4 gwo3 ho4
Pinyin mō zhe shí tou guò hé

Definitions (CC-CEDICT)
  1. to wade across the river, feeling for footholds as one goes (idiom)
  2. to advance cautiously, step by step
  3. to feel one's way forward