Formations were one of the things that cultivators could not do without. Formations played a very important role in a cultivator's life. If one wanted to build an immortal's cave, they could not do without formations. Formations could act as guards and help one cultivate.
The arrays used by cultivators were usually flat, with an array disc as the center and array flags as the nodes to generate an energy magnetic field. Once this magnetic field was formed, it meant that one's array had been successfully set up.
A magic array was actually a kind of magic array symbol that would cause a certain change in the magnetic field. This magnetic field could also absorb the nearby spiritual Qi and strengthen the strength of the magnetic field. Or, it could connect to the Earth's magnetic field and release the nearby spiritual Qi in another form. This was the most basic principle of magic arrays.
