Literature Reference: 至今丁令塞，朔吹空萧萧。—— 《相和歌辞 从军行 二》 To this day, the Dingling frontier remains, with the northern winds whistling desolately. Source from 'Cong Jun Xing II'.
丁: The fourth of the twelve Heavenly Stems, also symbolizing population.
令: Renowned reputation and illustrious name, symbolizing beauty, auspiciousness, and virtue.
Meaning: The Dingling frontier represents resilience and protection of the ancient borderlands.