Literature Reference: 蒲叶吴刀绿，筠筒楚粽香。—— 《五月六日发石头城步望前船示舍弟兼寄侯郎》 Green leaves of cattail like Wu knives, bamboo tubes of Chu with fragrant rice dumplings. Source from 'On the Sixth Day of May, Departing from Stone City, Watching the Boats Ahead, and Sending to My Brother and Hou Lang'.
筠: Graceful in demeanor, resolute and persevering.
筒: The stout bamboo tube.
Meaning: Bamboo tubes symbolize traditional festive culture, representing freshness, simplicity, and purity.