Before the northern expedition, there was an oath-taking meeting to announce the precautions for the northern expedition. During the northern expedition, no internal fighting was allowed for resources.
This was a basic condition, and the most important one.
Secondly, after discussion with the other major forces, the Capital of Horror took out a set of ancient arrays. On average, a team of ten people could gather the strength of ten people into one person at any time, which could attack, defend, advance, or retreat.
The requirement of an array was that the person who used it had to be of equal strength. This was why the participants of the northern expedition this time were all in the peak-level late-stage Star Transformation Realm and perfected Star Transformation Realm.
Because there were only two levels, it was easier to cooperate in battle. Even the major factions involved had their own battle formations or joint tactics.
