Literature Reference: 灞池水犹绿，榆关月早圆。——《送幽州陈参军赴任寄呈乡曲父老》 The water of the Ba Pool remains green, and the moon over Yuguan becomes full early. Source from 'Send Chen Canjun to Take Office in Youzhou, Sent to Hometown Elders'.
榆: The elm tree, with its evergreen foliage, stands tall and straight, embodying the spirit of unwavering resolve and robust vitality. Its seeds and flour are cherished in Chinese culture, symbolizing strength and prosperity.
关: Care and concern, symbolizing family harmony and mutual support.
Meaning: Yuguan signifies a frontier pass, embodying resilience and protection, while the full moon symbolizes reunion and beauty.