It's like the end of the world
Miao rukuang, Chinese idiom, Pinyin is mi à or ú Ku à ngsh à, meaning as if separated from a long time ago. From a letter to Li Bo.
The origin of Idioms
Feng Guifen in Qing Dynasty wrote a letter to Li Bo: "it is only more than 20 years ago, but the workers are scattered everywhere, and the army is flourishing. Therefore, it is as if the world is wide open, and few people know it."
Idiom usage
It's a long time.
It's like the end of the world
severity shown by an official on assuming office - xià mǎ wēi
adequate supply of foodstuffs and means of defense - zú shí zú bīng