Correct

不单

/ bùdān /
Strokes

Definition

not the only/not merely/not simply

Example

As an Adverb

not the only (one)

1
Yǒu
zhèzhǒng
这种
xiǎng
想法
de
dān
不单
shì
rén
  

I'm not the only one to have this idea.

As a Conjunction

not only; not merely; not simply

2
dānrén
单人
hǎo
  
,
érqiě
而且
nénggàn
能干
  

He is not only kind but also capable.

3
gōng
公司
dān
不单
gěi
men
他们
jīn
资金
bāngzhù
帮助
  
,
hái
gěi
men
他们
shù
技术
shàng
de
zhīchí
支持
  

Our corporation offers them not only financial aid but technical support as well.