Correct

亘古

/ gèngǔ / 
Strokes

Definition

throughout time/from ancient times (up to the present)

Example

As an Adverb

from time immemorial; in the remote past

1
Shìshàng
世上
méiyǒu
没有
gèngǔ
亘古
bù
不
biàn
变
de
的
dōngxī
东西
  
。

Nothing is eternally immutable.