The Supreme Lord of Nothingness

With a System: Mortal Realm, Cultivation Realm, Immortal Realm, Divine Realm, and Chaos Realm

No modern settings, only historical ones.

Earth ↣ Immortal Realm ↣ Divine Realm ↣ Hongmeng ↣ Chaos

Please recommend some.

Earth → Cultivation Realm → Immortal Realm → Divine Realm

Cultivators

Reborn, System, Transmigration, Invincible, Cultivation, Immortality

After transmigrate and being reborn, the protagonist gains a System and becomes invincible in the cultivation world.

Urban Fantasy, Inheritance, Alchemy, Golden Eggs, Nascent Soul, and Divine Transformation

A young man in the city inherits both medical and martial arts skills, keeps advancing, and eventually travels to another world.

Any Cultivation Novels Where the Protagonist Returns to the City, Becomes Invincible, and Shows No Mercy?