HSK C7-9/V7-9
Correct

/ yǐ /
Strokes

Definition

classical final particle, similar to modern 了[le]

Example

As a Particle

[used at the end of a sentence like了to indicate completion of an action]

1
wǎng
  

All is over now.

2
Huǐzhīwǎn
悔之晚矣
  

It's too late to regret.

3
dìng
  

The law was enacted/made.

As a Particle

[used in exclamation]

4
yāo
shīzhīzhě
失之者
xiān
  

Those who err on the side of strictness are few indeed!

5
Shén
  
,
zhī
huì
  
!

How stupid you are!