This method could maximize the extraction of all value from Kyoto, but because it involved skimming the surface for collection, it caused great spiritual exhaustion for Dong Tianyu. To decompose all the buildings in Kyoto at that moment would require a considerable amount of time.
Under normal circumstances, it didn't take much effort to bring uncontrolled items into the Cave, but if one were to collect in the manner of scraping the land, even if the expenditure of each operation was low, the energy consumed would add up over time to no small amount.
The other method relied on Divine Sense to search for valuable materials in the vicinity and then specifically collect these materials.
The advantage was that one could categorize the materials being collected, pick out some that could be reused, keep them in the Storage Space, and decompose the rest.
