Correct

开红灯

/ kāi hóng dēng /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/开红灯-Chinese-idioms-Cchatty-175ef64f-e9d4-40fd-a1f9-8faa33e2ac44-1612777032.jpg

Collocation

1
不可能开红灯
2
财政开红灯
3
学习开红灯
4
某学科开红灯

Definition

开红灯

Literally means:

show the red light

Actually means:

fail an exam; be in the red

It figuratively refers to failure in an examination or suffering from deficit in financial budget, as the failure score of an exam or the loss in a budget is written in red. Derogatory.

形容考试不及格或财政预算出现赤字(支出大于收入)。考试不及格的分数或预算赤字都用红字写出来。具有贬义色彩。

Example

Used as predicate or object. (作谓语、宾语)
1
Zhège
这个
xuésheng
学生
chúle
除了
wén
语文
zhīwài
之外
  
,
其他
各科
quán
全部
kāi
hóngdēng
红灯
  

The student has all the red lights except Chinese.

2
gǎo
cuò
le
  
,
de
xué
学习
tǐng
cuò
不错
de
  
,
néng
可能
kāi
hóngdēng
红灯
  

You're wrong, his study is quite good, it's impossible to turn on the red light.

3
Zhè
liǎng
nián
  
,
zhège
这个
guójiā
国家
de
jīng
经济
zhuàngkuàng
状况
hǎo
不好
  
,
míngnián
明年
hòunián
后年
de
cáizhèng
财政
suàn
预算
yǒu
néng
可能
huì
kāi
hóngdēng
红灯
  

In these two years, the country's economic situation is not good, next year and the year after the budget is likely to turn red light.