Couplets on the Nantian Gate of Gubei Water Town:
The first couplet: The mountain flows from the dome and the water flows from it.
The second couplet: This magnificent pass is blocked by Shuo Shuo.
Vault: high in the middle and drooping around.
Chuan Yan: It means that the air goes against the throat and hangs oneself, which is a metaphor for controlling the vital parts.
The general idea of ??"the mountain rises from the dome and the water flows from it" means: the mountain is towering and the water flows.
The general idea of ??"holding the great pass of Shuo Fortress" means: Nantianmen is the important noon pass guarding the North Fortress.