Correct

当紧

/ dāng jǐn / 
Strokes

Example

As an Adjective

important; urgent

1
Zhè
这
shì
事
hěn
很
dāng
当
jǐn
紧
  
,
xū
须
zhuājǐn
抓紧
bànlǐ
办理
  
。

This is an urgent matter that calls for immediate attention. / This is an urgent matter that needs to be handled right away.