- 亘古不变 gèngǔbùbiàn immutableunchanging since times immemorial; unalterable and permanent
- 亘古未有 gèngǔwèiyǒu unprecedentednever seen since ancient times; having no historical parallel
- 亘古通今 gèngǔtōngjīn throughout historyspanning from ancient times to the present day; continuous throughout history