In the Gear Castle, Helianjin was a "waste machine repairman" who relied on his repair skills to enter the Xin family, and his position was awkward. During an adventure deep into the mecha graveyard, he accidentally discovered a strange chip that could transmit a weak "whisper" from a pile of debris. It was not a combat core, but like some kind of "memory." Through clumsy and persistent groping in reverse, he deciphered the ancient "mechanical symbiotic agreement" - not slavery, but companionship. He reorganized scrapped parts into "iron mules" that could carry bricks, transport water, and generate electricity, powered by the decay energy of discarded nuclear batteries. Every time he repairs it, he has to make a difficult balance between the cold metal life and the vague "sense of presence" in the chip. When the energy oligarch "Panshi Group" tried to monopolize all technologies, Helianjin chose to disclose his "Iron Mule" drawings and "Symbiosis Agreement", setting off a storm in the wasteland about "who should own technology and who should define machinery." The goal is not to become a hero, but to establish a "Wasteland Mechanical Symbiosis Commune" where broken machines have the same dignity as humans.
