在风中写下婚约
[zài fēng zhōng xiĕ xià hūn yuē]
Meaning 'writing nuptial vows in the wind.' It poetically describes making solemn promises during fleeting or unpredictable times—conveying romance amid uncertainty or change, symbolizing ephemeral yet impactful commitments that exist between two people in uncertain circumstances or amidst tumultuous events in life.