Chen Fei summoned the Night Demon War Soldier with the purpose of refining an Array Puppet.
The core principle of an Array Puppet was indeed strikingly similar to the formation disks commonly used by Array Masters.
A formation disk was a specially made artifact upon which a complete or partial prearranged formation was fixed and miniaturized. When activated against an enemy, it could instantly unfold the preset formation, sparing one the trouble and danger of setting one up on the spot.
An Array Puppet took this concept a step further, directly "engraving" and "refining" formations into a puppet shell that possessed a certain degree of spirituality and mobility. The puppet itself became a living, mobile foundation for a formation.
Normally, an Array Puppet could follow an Array Master like a guard. Once battle began, the Array Master only needed a thought for the core offensive or defensive formations refined within the puppet to activate instantly.
There was no need for the Array Master to divide his attention to manipulate Formation Flags or Array Eyes. The formation's power would be released directly through the puppet's body, reacting far faster than manually arranging a formation. Moreover, because the formation was perfectly integrated with the puppet's materials and structure, its stability and power could even surpass conventional methods.
Compared with formation disks, the advantage of Array Puppets was not merely their mobility and instant activation.
More importantly, a well-designed Array Puppet with sufficient spirituality could automatically fine-tune the formation runes and energy circuits engraved within it according to its specific surroundings, such as the direction of earth veins, the attributes of spiritual energy, and the surrounding Heaven and Earth Rules. This allowed the formation's power, stability, and compatibility with the Heaven and Earth Rules to reach their optimal state for the current environment.