Transporting grain is not a simple task.
It's a massive mobilization, requiring manpower and resources in the tens of thousands.
To send one hundred dan of grain to the border, you must first account for the consumption by oxen, horses, and laborers during transportation.
Add it all together, and for every hundred dan of grain sent to the border, at least five hundred dan must be prepared in advance.
If ten thousand dan of grain are to be sent to the border, at least fifty thousand dan must be prepared.
In the grain transport team, every twenty carts form a group, led by an official with ten small soldiers responsible for maintaining order.
Each cart is staffed with six laborers, a coachman, a rear guard, and two guards on each side.
The six are responsible for one cart; the grain on the cart, after accounting for their own consumption, must be delivered to the military camp as scheduled.
