Correct

纯然

/ chún rán / 
Strokes

Example

As an Adjective

pure; clean; unmixed

1
Chúnrán
纯然
yīsè
一色

be of the same/solid colour

As an Adverb

purely; simply

2
Wǒ
我
bāng
帮
tā
他
chúnrán
纯然
shì
是
chūyú
出于
yǒuyì
友谊
  
。

I helped him purely out of friendship.