山窮水盡

山穷水尽
shānqióngshuǐjìn
  1. mountain and river exhausted (idiom); at the end of the line
  2. nowhere to go

CEDICT

having no more options; being at the end of one's rope; extremely desperate and hopeless

Wiktionary

比喻陷於絕境，窮困之至。《官場現形記．第四七回》：「及至山窮水盡，一無法想，然後定他一個罪名。」《文明小史．第五八回》：「兄弟現在已經是山窮水盡了，苟有一線生路，怎敢冒瀆小翁。」也作「水盡山窮」、「水窮山盡」。

重編國語辭典

走投無路而陷入絕境的困境

維基詞典

Entry Composition

1 山 shān (coll.) small bundle of straw for silkworms to spin cocoons on

classifier: 座
2 窮 qióng
  1. poor
  2. destitute
  3. to use up
  4. to exhaust
  5. thoroughly
  6. extremely
  7. (coll.) persistently and pointlessly
3 水 shuǐ
  1. water
  2. (after a name) ... River
  3. to swim (used mostly in 會水 huìshuǐ and 水性 shuǐxìng)
  4. (coll.) lacking in substance; shoddy
  5. (bound form) additional cost; extra income
  6. classifier for washings of a garment
4 盡 jìn
  1. to use up
  2. to exhaust
  3. to end
  4. to finish
  5. to the utmost
  6. exhausted
  7. finished
  8. to the limit (of sth)
  9. all
  10. entirely

Related entries

無路可走 wúlùkězǒu
  1. nowhere to go
  2. at the end of one's tether
最危险的猎物是无路可走的那种。

Cornered prey is the most dangerous kind.

Source: Tatoeba

無路可逃 wúlùkětáo
  1. no way out
  2. nowhere to go
  3. trapped beyond hope of rescue
  4. painted into a corner