Literature Reference: 那得更将头上发，学他年少插茱萸。 —— 《九日与杨凝崔淑期登江上山会有故不得往因赠之》 How can I make my hair grow back, to learn from the youth who wear the dogwood? Source from 'A Poem to Yang Ning and Cui Shu on Their Failed Journey to the Mountain'.
插:
萸: [Zhuyu] See "Zhu." A shrub or small tree whose fruit is used for medicinal purposes. There is also the Evodia rutaecarpa, a shrub whose flower buds are used medicinally.
Meaning: Wearing dogwood symbolizes good wishes and represents health and longevity.