The Gathering Spirit Array can concentrate the Spiritual Energy from the surrounding area, and even Guo Feilong, as the lord of the fiefdom, can only have one super-large Gathering Spirit Array in the main city, which belongs to him personally.

No one can privately construct a Gathering Spirit Array, because once someone does, it will be immediately detected.

This is because the Spiritual Energy from the surrounding area will converge in one place, like the sun in a clear sky, and any cultivator can sense the abnormal concentration of Spiritual Energy in that location.

Apart from the Gathering Spirit Array in the cave abode, the Celestial Palace Holy Land has no other businesses within the fiefs of its elders and disciples.