The inner area of the level 2 City Tower was wide enough to build a Chi-amassing formation.
Whether it was the geographical location or the concealment, it could meet the requirements.
The rich spirit energy in the territory would be highly concentrated by the spirit gathering array and used as a high-level energy source for the operation of equipment.
Among all the known energy sources, heaven and earth energy ranked very high, but it was not easy to use it smoothly.
Especially for ordinary people, they couldn't even sense it, let alone use it.
The usage of heaven and earth energy was more or less exclusive to cultivators.
When a cultivator was cultivating, he could try to absorb and gather spiritual energy to change his meridians and body.
This kind of energy transformation process would not only benefit the cultivator himself, but it would also make the cultivator more compatible with the world's energy.
