Correct

长存

/ chángcún / 
Strokes

Definition

to exist forever

Example

As a Verb

live/last forever; be immortal/ageless/eternal/everlasting/undying

1
Yǒuyì
友谊
chángcún
长存
  
。

Friendship will live forever.

2
Tā
他
de
的
yīng
英
míngjiāng
名将
yúshìchángcún
与世长存
  
。

His heroic name will be remembered forever.