The distance to Border City is far, it's quicker to mine salt directly than to buy it.
Shallow rock salt is relatively easy to mine and can even be broken off by hand without tools.
The method of refining rock salt is also quite simple. First, crush it and use coarse linen to filter out large clumps of dirt and stone impurities, then boil and filter it a second time, and finally boil it again to crystallize it.
After these simple three steps, the salt obtained isn't as fine as what Rod ate in his previous life, but in this era, it is considered pretty good quality and can meet daily needs.
The main responsibilities Rod assigned to Gang Le are supervision and transportation.
"Your brothers have to make a choice, to continue being mercenaries or to stay and become the settlers of Frost Leaf Town."
Rod said to Gang Le in front of him, "There's no other way. Such tasks must be entrusted to someone trustworthy, and I only trust you."