夜行晝伏

夜行昼伏
yèxíngzhòufú
to travel at night and lie low by day (idiom)

CEDICT

白天潛伏，晚上趕路。

重編國語辭典

Entry Composition

1 夜行 yèxíng
  1. night walk
  2. night departure
  3. nocturnal
2 晝 zhòu daytime
3 伏 fú
  1. to lean over
  2. to fall (go down)
  3. to hide (in ambush)
  4. to conceal oneself
  5. to lie low
  6. hottest days of summer
  7. to submit
  8. to concede defeat
  9. to overcome
  10. to subdue
  11. volt