少年可曾知我的长发为你留姑娘可曾知我的事业为你有
[shăo nián kĕ céng zhī wŏ de zhăng fā wéi nĭ liú gū niáng kĕ céng zhī wŏ de shì yè wéi nĭ yŏu]
'Boy, could you know that I kept long hair for you; girl, could you know I built up my career because of you?' This reflects deep devotion expressed through actions—maintaining appearance or pursuing achievement—all driven by feelings held for someone special who may never truly understand or appreciate these sacrifices.