The Dead Zone training wasn't a new part of either Rose or Ruyue's regime. They'd been stationary within this space for many months already, edging closer and closer to a breakthrough with every passing second.
Usually, when it was time to make a major leap in power, one would need to level up profusely and consolidate their power. However, this same case didn't apply to the two of them.
After all, they'd been fighting with their lives on the line for many years after reaching 3rd class. They weren't just trophies who stood around and waited for their husband to finish work and come home.
When it came to wars, Rose and Ruyue had participated in them more than even Damien. They were key players in the purges of three worlds that took place while Damien was busy training.