大門不出，二門不邁 [－门－－－－门－迈]

Jyutping daai6 mun4 bat1 ceot1 ， ji6 mun4 bat1 maai6
Pinyin dà mén bù chū ， èr mén bù mài

Definitions (Wiktionary)
  1. phrase, idiomatic
    to never leave home, and have little contact with the outside world; to live a sheltered life