1. "Gan Zhengkun" literally means "seal script can correct the imbalance of Yin and Yang between heaven and earth", which means "correct leadership and order can maintain social harmony and stability".
2. These four words may also represent the architectural style of Jiayuguan Tower. In ancient China, seal script was a popular calligraphy in Qin and Han dynasties, and "seal script correction" may refer to the correctness or standard of this architectural style. In China culture, "Gankun" often represents heaven and earth, Yin and Yang, and Gankun. Therefore, the use of "Zhu Zhenggan Kun" in the couplets on the stage shows that the design and construction of this building follow the correct principles and standards.
3. "Zheng Zheng Gan Kun" can also be understood as a praise for the historical position and role of Jiayuguan Tower. This tower was built in the Ming Dynasty to resist the invasion of nomadic people in the north, which has important military and political significance. And "the seal is just Gankun" means that this tower has played a correct role in guiding and correcting Gankun in history and has had a far-reaching impact on the Ming Dynasty and even the whole Chinese culture.
The above is the answer to this question, I hope it will help you.