Literature Reference: 山有榛，隰有苓。—— 《诗经·邶风·简兮》 On the mountains grow hazelnuts, in the lowlands grow ling herbs. Source from 'The Book of Songs'.
苓: The plant names: Ling'er, Fuling.
Meaning: Ling, a medicinal herb, symbolizes nature, purity, and vitality.