篳路藍縷

筚路蓝缕
lán
the hardships of beginning an undertaking (idiom)

CEDICT

  1. (figurative, of a pioneer) braving hardships and difficulties in beginning an undertaking
  2. braving hardships and difficulties in beginning an undertaking

Wiktionary

竹編柴車篳路藍縷柴車穿破開闢山林左傳十二》:「篳路藍縷山林。」孔穎達正義:「篳門竹編柴車方言:『凡人藍縷。』藍縷。」比喻創造事業艱苦連橫臺灣通史〉:「臺灣海上荒島篳路藍縷山林至於。」藍縷」、「」、「襤褸」。

重編國語辭典

比喻開創事業艱苦

維基詞典

Entry Composition