長安非安過眼雲煙
[cháng ān fēi ān guò yăn yún yān]
'Chang'an' refers to an ancient Chinese capital city. The name translates to 'Even the prosperous Chang’an City is like fleeting clouds'. It conveys the transient nature of life's successes and failures, reflecting the philosophical view that prosperity and peace are not everlasting and everything passes quickly over time.