Literature Reference: 亭堠列万里，汉兵犹备胡。——《塞上》高适 Watchtowers stretch for thousands of miles, as Han soldiers still guard against the Hu. Source from 'Sai Shang' by Gao Shi.
亭: Standing gracefully, poised and dignified. Her posture is exquisite, and her demeanor is truly remarkable.
堠: The ancient earthen fortress used for observing enemy movements. Its name carries the connotations of safety and steadfastness.
Meaning: Watchtowers symbolize vigilance and resilience in frontier defense.