An intelligent brain system that bound itself to Jiang Lin when she was near death. It appears as a dust-covered little sphere with a dull gray casing scratched from years of neglect, faintly glowing blue after binding. It has construction modules (building materials, walls, fences, soil blocks, stone blocks, furniture) and farming modules for growing food. It can detect items like seeds and batteries, project holographic blue screens, shrink to thumb size, and upgrade other devices. It communicates through text in brackets and can speak inside the host's mind. If binding is terminated, the host returns to near-death state.
