陪我从齐肩短发到长发及腰陪我从懵懂无知到淡然沉静
[péi wŏ cóng qí jiān duăn fā dào zhăng fā jí yāo péi wŏ cóng mĕng dŏng wú zhī dào dàn rán chén jìng]
It describes a long-term companion journeying together with someone through life changes. These include growing up from youthful innocence and short hair length till becoming more serene and mature, even as their hairstyle transitions to waist-length long hair.