Literature Reference: 昨卧南城月，今行北境春。—— 《去岁罢杭州今春领吴郡慙无善政聊写鄙怀兼寄三相公》 Last night I lay under the moon in the southern city, today I travel to the northern border in spring. Source from 'Qu Sui Ba Hangzhou Jin Chun Ling Wu Jun Can Wu Shan Zheng Liao Xie Bi Huai Jian Ji San Xiang Gong'.
北: Direction, in the morning facing the sun, the side to the left hand, opposite to "south".
境: Border, the frontier of a nation.
Meaning: The northern border symbolizes vastness, resilience, and the spirit of exploration.