When Xuan Ci's fingertips touched the cold remains of his comrade's prosthetic body, he personally removed her mechanical heart - it was the 73rd work he designed, and it was also the starting point for him to become the top prosthetic doctor in the black market. No one knew that this young man, who survived by picking up old chips in the apocalyptic wasteland, could sew nanoscale nerve bundles with his fingers, and his eyes reflected the forbidden blueprint of the empire. When the field medical officer dropped three silver coins at his feet, everyone was waiting to see the joke. Until he was on the operating table, using his naked eyes to distinguish the tampered gene lock, and installed the empire's most advanced prosthetic limb on the abandoned woman——
The underground boxing ring erupted with a beast-like roar, and her mechanical arm smashed the titanium alloy armor on the opposite side. "Who is next?" Amidst the flying dust, Xuan Ci lowered his eyes and caressed the scar on his palm, but the cold voice of a certain system echoed in his mind: "Warning, there are still 73 hours and 11 minutes until the old memory is awakened."