Correct

一落千丈

/ yī luò qiān zhàng /
Strokes

Definition

lit. to drop a thousand zhang in one fall (idiom)/fig. (of business, popularity etc) to suffer a sudden, devastating decline/to take a dive

Example

Definition

drop a thousand zhang in one fall—drop off suddenly

1
Xuán
悬崖
zài
zhè
这里
rán
突然
luòqiānzhàng
一落千丈
  

The cliff drops off suddenly here.

Definition

suffer a disastrous/drastic decline

2
Yóu
由于
chǒuwén
丑闻
  
,
de
shēngwàng
声望
luòqiānzhàng
一落千丈
  

His prestige suffered a disastrous decline because of the scandal.

3
Shèhuì
社会
fēng
风气
luòqiānzhàng
一落千丈
  

Morals and manners of society have declined enormously.

4
qīn
父亲
shì
去世
zhīhòu
之后
de
jiājìng
家境
luòqiānzhàng
一落千丈
  

His family's financial situation has rapidly worsened since the death of his father.