篳路藍縷〔筚-蓝缕〕 bat¹ lou⁶ laam⁴ leoi⁵ {bì lù lán lǚ}

the hardships of beginning an undertaking (idiom)

篳門閨竇〔筚门闺窦〕 bat¹ mun⁴ gwai¹ dau⁶ {bì mén guī dòu}

1. wicker door, hole window (idiom); fig. wretched hovel
2. living in poverty