少女的情不及海深少年的泪不及海蓝
[shăo nǚ de qíng bù jí hăi shēn shăo nián de lèi bù jí hăi lán]
It translates to 'A girl's affection isn't as deep as the ocean, while a boy's tears do not match its blueness,' reflecting a bittersweet feeling of growing older. It suggests teenage love and tears lack the profundity compared to real-life challenges, indicating youthful naivety and emotional immaturity.