Literature Reference: 堠空烽火灭，气胜鼓鼙鸣。—— 《和渭北刘大夫借便秋遮虏寄朝中亲友》 The watchtowers stand empty, the beacon fires extinguished, while the spirit of victory resonates with the drums. Source from 'He Wei Bei Liu Da Fu Jie Bian Qiu Zhe Lu Ji Chao Zhong Qin You'.
堠: The ancient earthen fortress used for observing enemy movements. Its name carries the connotations of safety and steadfastness.
空: The heavens, the expanse.
Meaning: The empty watchtowers symbolize peace and tranquility, as well as victory and a serene life.