海誓山盟的青春执手莫离的年华
[hăi shì shān méng de qīng chūn zhí shŏu mò lí de nián huá]
Vows as firm as sea vows and mountain alliances characterize youthful romance where lovers promise never to part, depicting deep affection and loyalty enduring through all stages of life, reflecting on precious yet potentially idealized periods of growing up together.