Three Thousand Years in a Dream: The Immortal Emperor Returns to the Mortal World

1. The Three Realms: The Mortal Realm, the Spirit Realm, and the Immortal Realm. The three realms are strictly separated, and traveling between them requires either breaking through to a higher cultivation level or using a special artifact. The Mortal Realm is divided into the eastern, western, southern, and northern continents. Spiritual energy is scarce there, and only a handful of reclusive sects and places where spiritual veins converge offer opportunities to cultivate immortality. The Spirit Realm is rich in spiritual energy and filled with sects; it is the main gathering place for cultivators and is divided into upper and lower realms. The Immortal Realm is the highest realm, divided into the Nine Heavens and Thirty-Six Domains. It is home to ancient immortal clans and powerful cultivators. Its laws are complete, and it is the seat of the Immortal Emperor's rule.

2. Cultivation system: Mortal Realm (Qi Refining, Foundation Establishment, Golden Core, Nascent Soul, Deity Transformation) → Spirit Realm (Void Refining, Body Integration, Great Ascension, Tribulation Transcendence) → Immortal Realm (Earth Immortal, Heavenly Immortal, Golden Immortal, Great Unity Golden Immortal, Great Luo Golden Immortal, Immortal King, Immortal Emperor). Each realm has four stages: early, middle, late, and peak. The Immortal Emperor stands at the summit, and only one person can attain the Dao and control the laws of the Immortal Realm.

3. Core rule: “Dream Realm Link.” Because Lin Chen carries the innate “Primordial Chaos Dream Seed” within him, when he falls asleep his consciousness can enter an illusory version of the Immortal Realm, where time passes at a ratio of 1:1000 compared to reality. Cultivation techniques, insights, and opportunities gained in the illusion can all synchronize with his real body, while injuries sustained in the illusion cause only a mild backlash in reality, which can be neutralized with pills. The Dream Seed needs spiritual energy to nourish it. The higher his cultivation, the more stable his dreams become, and in the later stages he can control when he enters them.