1. Core settings
Coordinates: The last signal observation tower on earth (reality) vs. The digital simulation city "Sofia" where the sun never sets (virtual).
Technical background: All humans have taken refuge in "Sofia". There are only a handful of "tower keepers" left in the real world, responsible for maintaining servers and clearing snow from antennas.
2. Biographies of characters
Protagonist A: Jiang Yue (the real-life tower keeper)
Lonely, silent, wearing heavy cold-proof clothing. Her world is gray snow, icy antennae, and canned food. Her only entertainment was listening to old-time radio broadcasts.
Protagonist B: Zero (AI guide/incomplete consciousness in the virtual city)
In "Sofia," she is the perfect guide for new immigrants. But due to an early data overflow, she had an unexplained program error - she could always hear a noise coming from the "outside".
Intention: Temperature is greater than algorithm