In the new Chang'an of 2077, human society has experienced a "digital immortality revolution." Through the "amber of consciousness" chip implanted in the back of the neck, people's thoughts can be uploaded to the cloud server in real time, achieving theoretical eternal existence. But this technology has serious flaws - complete consciousness replication requires high costs, and most ordinary people can only choose to retain the "consciousness silhouette" of core memories, resulting in the gradual fragmentation of the digital soul. Mechanical products from the old era are regarded as symbols of obsolescence, and only a few craftsmen stick to the skills of repairing these "mechanical fossils".
