So-called "corresponding substances" were material constituents in the universe—or, more precisely, within the Central Star Zone, under the coverage of the Abyssal Spirit Net—that could most efficiently bear a particular deity's rules and laws.
Essentially, each deity corresponded to one substance.
These material constituents could store a deity's blessing power for long periods, making them the first choice for crafting talismans, magical artifacts, and similar objects.
The dust left over from Ronan's earlier "rubbing" in the Warehouse had largely contained these "corresponding substances."
For instance, the King of Corrupted Blood's corresponding substance was an acidic resin, rarely found in nature. Large-scale production required cultivating the relevant trees, or simply synthesizing it artificially.
If, on some planet, one saw vast stretches of those distinctive squat trees corroding the ground into highly acidic swamps, it was most likely a plantation belonging to priests of the Myriad Gods Hall's Corrupted Blood Sect.
Of course, making talismans was essentially the exclusive province of the clergy, and their use was subject to standards as well.
An "ordinary member of the faithful" like Ronan could only treat this as knowledge to memorize.
At most, he could learn about the relevant material environments and how they reinforced or counteracted one another, learning to exploit favorable surroundings, stay alert in unfavorable ones, or avoid misjudgments in similar circumstances.
Come to think of it, Ronan had studied this knowledge before.
The "parent-child course" his Old Man, Luo Zhongheng, had given him included material on this subject... and exams.
It was not simply a matter of memorization. The exams also covered coordination, conflict, and checks and balances between deities of the same system and those of different systems.
The "parent-child course" had offered none of the excellent learning conditions available in the Central Star Zone. However detailed its descriptions, there