**Core settings:**
1. **World view**: Strangeness has arrived, reality and the underworld merge, and ghosts are rampant. When humans awaken their abilities, ghost coins become special currencies that can be traded for ghosts, enhanced abilities, or exchanged for life. Every month "ghost tides" sweep through the city, and only the strong survive.
2. **Protagonist**: Lin Mo, an ordinary person awakens to the "Nether Coin System" and obtains trillions of Nether Coins at the beginning. He can trade and suppress ghosts, and gradually reveals the relationship between Nether Coins and the final ghost king.
3. **System Ability**: Identify the strength of ghosts, detect strange events, and replenish ghost coins through tasks or killing ghosts. Special ghost coins hide clues, such as countdown notes with the face of the Ghost King printed on them.
4. **Weird rules**: Ghosts follow "equivalent transactions", but there are many traps; human awakeners are divided into good and evil camps, and some degenerate into "ghost servants"; the ghost market is only open to ghost coin holders.
5. **Ultimate Goal**: Survive the strange erosion, solve the mystery of the system, and fight against the final ghost king who controls everything.
