Literature Reference: 云交雨合知何年。—— 《杂曲歌辞 古别离》 When clouds meet and rains merge, who knows what year it will be. Source from 'Zaqu Geci Gu Bieli'.
雨: The life-giving rain that nourishes all things.
合: Gathering: United Strength. In perfect harmony without prior consultation.— "Guangdong Military Affairs Record"; When used as a personal name, it signifies unity, like-mindedness, and also conveys a sense of harmony.
Meaning: The harmonious meeting of clouds and rains symbolizes the perfect fusion of nature and humanity.