Luo Guihong, an unknown maintenance worker at the bottom of the floating city, accidentally obtained the artifact "Floating Heart" in an abandoned fortress. The artifact gave him extraordinary skills: nano-level precision welding, mechanical perspective, and automatic calibration of torque, instantly giving scrap iron a new lease of life and increasing efficiency by a thousand times! With this incredible ability, he repaired impossible machines and defeated the monopolized black iron workshops at the bottom. He became famous and was revered as the "Master of Mechanics" by the residents at the bottom. However, the reputation has also attracted the exclusion and doubts of the "Brilliant Maintenance Company", an established force at the middle level. Facing the challenge, Luo Guihong used the ancient knowledge unlocked by the Floating Heart to repair the key energy transfer station that even the middle-level masters were helpless. This shocked the middle-level and made his status jump. As the floating heart continues to upgrade, ancient blueprints and knowledge bases are gradually unlocked, and he begins to come into contact with the deeper ancient secrets behind the energy crisis at the core of the floating city. When he was invited to repair the "damaged Sky Fortress Core", a seemingly successful repair inadvertently touched the ancient seal deep in the core, awakening a majestic power that had been dormant for hundreds of millions of years. The floating heart issued a strong warning, indicating that a greater crisis was about to surface. Luo Guihong realized that what he had repaired was just the tip of the iceberg, and the real challenge had just begun... What kind of mystery of the origin is hidden in this giant floating city?
