时光匆匆的小流年懵懵懂懂的小青春
[shí guāng cōng cōng de xiăo liú nián mĕng mĕng dŏng dŏng de xiăo qīng chūn]
'Hastily fleeting young years and confused small youth' conveys the passage of time through one’s adolescence, filled with uncertainty but beautiful in simplicity. It highlights the bittersweet emotions attached to youthful memories.