疯疯癫癫的小幸福懵懵懂懂的小青春
[fēng fēng diān diān de xiăo xìng fú mĕng mĕng dŏng dŏng de xiăo qīng chūn]
Translated to 'Crazy little happiness, naive little youth', it captures those whimsical and unpredictable moments that occur during one's youth, full of carefree laughter and simple joy.