千难万险 (qiān nán) — countless hardships and dangers; an extremely difficult and perilous journey or process

Definition

Examples

• 红军长征经历了千难万险，最终到达了陕北。
  Hóng jūn cháng zhēng jīng lì le qiān nán, zuì zhōng dào dá le shǎn běi.
  The Red Army's Long March went through countless hardships and dangers, finally reaching northern Shaanxi.
• 创业的路上千难万险，但只要坚持就能成功。
  Chuàng yè de lù shang qiān nán, dàn zhǐ yào jiān chí jiù néng chéng gōng.
  The path of starting a business is full of countless difficulties and dangers, but as long as you persist you can succeed.
• 他不怕千难万险，勇敢地向前走。
  Tā bú pà qiān nán, yǒng gǎn dì xiàng qián zǒu.
  He is not afraid of countless hardships and dangers, and bravely moves forward.