I will post relevant information about the Power System in this chapter and keep it updated; Also, there will be no spoilers here, just technical information.
Cultivation Realms:
1 Martial Novice
2 Martial Warrior
3 Martial Lord
4 Martial King
5 Martial Emperor
6 Martial Tyrant
7 Martial Sovereign
Each Realm has 10 layers, and with each new layer and realm, the overall power increase is more relevant.
The cultivation level rules the power of almost all creatures in the story, but the strength of the MC (Klaus) and his wives is influenced by his vampiric abilities, so their overall power is much higher than their cultivation.