Literature Reference: 沛然下雨，冬雷震震。—— 《诗经·小雅·鹿鸣》 The rain falls abundantly, and winter thunder rumbles. Source from 'The Book of Songs'.
沛: Describing abundance and prosperity.
冬: Like the winter sun, it brings warmth and a sense of intimate comfort.
Meaning: Full of vitality and resilience, like the thunderous rain in winter.