Correct

附笔

/ fù bǐ / 
Strokes

Definition

postscript

Example

As a Noun

additional remarks; postscript (PS)

1
Tā
她
yòu
又
fùshàng
附上
yī
一
bǐ
笔
  
,
yào
要
wǒ
我
gěi
给
tā
她
jì
寄
xiē
些
qián
钱
  
。

She added a PS asking me to send her some money.