The journey to the northern Bear Nation spans tens of thousands of kilometers.
It's unrealistic to rely solely on the legs of these troops to get there. Even if they are all above Silver Tier, it would take them over a month to cover such a distance!
Time is of the essence now, and any time saved is crucial.
Therefore, the Long Nation had already prepared over a thousand military supply trains for them. They only needed to travel from Jiangzhou to the neighboring Fuhu Province, where they could board the trains directly to the Bear Nation.