A long time ago
The Chinese idiom refers to a long time ago.
explain
Of old age.
source
The preface of Dai Mingshi in the Qing Dynasty: "however, when the age is far away, the teacher's biography has stopped."
usage
As a predicate or object; of old age
A long time ago
Seeking loyalty and filial piety - qiú zhōng chū xiào
not for days [ merely ] or for months - bù rì bù yuè
people jostle each other , talking and laughing - yǔ xiào xuān tiān