Correct

开襟

/ kāijīn / 
Strokes

Definition

buttoned Chinese tunic/unbuttoned (to cool down)

Example

As an Adjective

(a garment) with buttons down the front or the right side

1
Yòu
右
  
/
zuǒ
左
kāijīn
开襟

(garment) with buttons down the right/left side

2
Duì
对
kāijīn
开襟

(garment) with buttons down the front

3
Kāijīn
开襟
jiākè
夹克

cardigan jacket

4
Kāijīn
开襟
yángmáoshān
羊毛衫

cardigan (sweater)

5
Kāijīn
开襟
lǐngkǒu
领口

cardigan neckline

6
Kāijīn
开襟
chènshān
衬衫

open shirt