Literature Reference: 应怜萤聚夜，瞻望及东邻。—— 《清明日赐百僚新火》 The night of gathering fireflies should be cherished, as we look towards the eastern neighbors. Source from 'Qingming Day Bestowing New Fire to the Court'.
聚: The term signifies gathering or assembly.
萤: [Fluorite] A mineral with a vitreous luster, often capable of changing color when exposed to light or heat, also known as "fluorspar."
Meaning: Gathering fireflies symbolizes diligent study and the accumulation of wisdom.