In just a few short months, the ruins seen in the beginner area following the battles were no more. During this time, they managed to replenish their lost troops, and despite several boss monsters being replaced due to mistakes, the monsters in the beginner area managed to restore their military power.
Of course, a situation like Zhou Tian's would not occur where a group's strength did not decline but rather improved following a battle. It could be said that collections like Zhou Tian's were rare as most bosses did not have this ability. After strenuously restoring their forces, it would take the lower rank bosses in the monster clans several years to fully recover.
