The cultivation realms of the foreign world in the novel "The Great Demon King" could be divided into the following categories: 1. Basic Cultivation Realm: Cultivators need to improve their physique and spiritual power through cultivation to reach the basic cultivation realm. These realms included qi condensation, body refinement, foundation establishment, core formation, nascent soul, and so on. 2. Nascent Soul Cultivation Realm: After the basic cultivation realm, the cultivator needs to further cultivate to improve his spiritual power and physique to reach the Nascent Soul Realm. The cultivation stages of the Nascent Soul realm included transformation, fusion, soul transformation, and mystic transformation. 3. Divine Dao Cultivation Stage: After the Nascent Soul Stage, the cultivator needs to further improve his cultivation ability to reach the Divine Dao Stage. Divine Dao cultivation realms included Dao Fruit, Dao Foundation, Dao Body, Dao Embryo, Dao Repository, and so on. [4. Dao Realm Cultivation State: After the Divine Dao Cultivation State, the cultivator needs to further improve his cultivation ability to reach the Dao Realm Cultivation State.] Dao Realm cultivation realms included Dao Origin, Dao Root, Dao Body, Dao Embryo, Dao Repository, and so on. [5. Cross-realm Cultivation Realm: After reaching the Dao Realm Cultivation Realm, the cultivator can improve his cultivation ability through cross-realm cultivation to reach the cross-realm Cultivation Realm.] The cross-realm cultivation realm included cross-realm, cross-realm, cross-heaven, cross-god, and so on. It should be noted that different novels may have different cultivation realm settings, so the above is only the basic setting in the novel "The Great Demon King".