to lodge under another person's roof (idiom); to live relying on sb else's charity
Definitions (粵典–words.hk)
語句
寄居他人屋下,形容依附其他人,唔能夠自立 to depend on somebody else for a living, literally "to live under another's roof"
你而家寄人籬下,樣樣嘢都要客氣啲唔好失禮人啊。
你而家寄人篱下,样样嘢都要客气啲唔好失礼人啊。
nei5 ji4 gaa1 gei3 jan4 lei4 haa6, joeng6 joeng6 je5 dou1 jiu3 haak3 hei3 di1 m4 hou2 sat1 lai5 jan4 aa3. You are living in his house, be courteous and don't lose your manners.
Definitions (Wiktionary)
phrase, idiomatic
to depend on others, thus not being self-reliant