青春若有一张不老的脸青春若有一颗不变的心
[qīng chūn ruò yŏu yī zhāng bù lăo de liăn qīng chūn ruò yŏu yī kē bù biàn de xīn]
'If Youth Had An Ageless Face and Unchanging Heart' laments the fleeting nature of youth. It desires for eternal youth, both physically and emotionally, suggesting a longing for lasting beauty and innocence.