逝去的年少是首忧伤的歌
[shì qù de nián shăo shì shŏu yōu shāng de gē]
Translating to 'My lost youth is a melancholic song,' it conveys nostalgia for one's carefree, youthful days filled with sweet memories. Yet the underlying emotion is bittersweet as those golden years have gone by, leaving behind only recollections.