At first glance of the primary Control Core, Rein was reminded of those circuit boards from his past life, similar to the cartridges used in gaming consoles like the ones from the nineties.
However, the making of this technology is quite challenging, with a high demand for precision. Currently, the Bixiu Mechanization School represents the Empire's highest level of craftsmanship in this area, yet they can only produce the primary Control Core.
As for the medium and advanced Control Cores noted in ancient texts, they remain in the exploratory phase.
This also explains why the metal arm remnant Rein obtained from Iron Man was worth 3,700 Contribution Points.
According to Mentor Mogaro, the Eagle Federation is ahead of the Empire in terms of manufacturing precision. Of course, it's also possible that the Federation discovered an important relic of the Ancient Goblin Empire and absorbed the relevant technologies.
The other matter concerns the Wizard School's secrets.
