Not to mention the distant past, recently the border pass has been unrest, mostly because the city walls of the border pass have collapsed in several places due to heavy rain.
The city walls of Zhan Country were too fragile; they had to be rebuilt every few years, and even so, they were prone to collapse.
The Turks were lying in wait, posing as horse thieves to invade several times. If this continued, the border pass would inevitably fall into a more significant crisis.
Zhan Country was not a military powerhouse. A war with Chen Country several years ago had badly wounded Zhan Country. If there were another war at this time, the cost would be devastating.
The court was discussing how to repair the city walls as quickly as possible. If this special mortar existed, wouldn't they stop worrying about the walls collapsing?
This contribution was not smaller than that of the bellows!
