Literature Reference: 殷其雷，在南山之阳。何斯违斯，莫敢或遑？振振君子，归哉归哉！—— 《诗经·国风·召南·殷其雷》 The thunder rumbles, on the sunny side of the southern hills. Why do we part from here, with no time to spare? The noble gentleman, return, return! Source from 'The Book of Songs'.
斯: This person, this moment. It conveys a sense of refinement, the awe-inspiring dignity of a sage, and the dedication of one who lives and breathes their principles morning and night.
阳: Sunlight. It symbolizes warmth and radiance.
Meaning: Si Yang symbolizes brightness, warmth, and hope, embodying the noble demeanor of a gentleman who shines like the sun.