Literature Reference: 日光不透烟常在，先校诸家一月寒。—— 《题源分竹亭》 Sunlight cannot penetrate the lingering smoke, heralding the chill of a month ahead. Source from 'Ti Yuan Fen Zhu Ting'.
烟: Smoke, billowing clouds. Herbal essence.
常: Ordinary; common. Describing people and things that stand out, distinct from the ordinary.
Meaning: Lingering smoke symbolizes constancy and resilience, ever-present and enduring.