In plain terms, they are various buildings based on the Power of Faith energy.
Now that she has the witch Huang Shou, who once cosplayed the Beastman God, there has been significant progress in the research on the Power of Faith.
However, this doesn't change the fact that there is currently a lack of knowledge in this area within the territory.
As it stands, all knowledge related to the Power of Faith within the territory, aside from Huang Shou's own experience and summaries, is found only in her cathedral's runes.
However, because prior to this, her cathedral was the only place in the territory with relevant knowledge, all research was based on these two sources, much like inbreeding, often leading to "malnutrition" due to the single source of knowledge.
This batch of blueprints, specially collected this time, provides a supplement of brand new knowledge.