When "returning to youth" becomes a standard public service, the hidden costs quietly emerge. Lin Xu was one of the early adapters of the "Xizhao" exoskeleton. On the day when his body functions returned to their 40-year-old golden state as expected, an irresistible blues melody began to circulate in his mind, accompanied by an unexplained desert coordinates - that is where all "rehabilitators" eventually disappeared.
He discovered that he was not an exception, but an ancient "doctor's order" buried deep in the code. Faced with the cryptic silence of technology giants, the believer-like "Pilgrim" organization, and the existential crisis of being deeply bound to his own body and code, Lin Xu must race against time. What he can rely on is not force, but the ultimate understanding and utilization of system rules. He decided not to fight against the call, but to try to deceive it - through careful calculation, he would always calibrate his physiological state to the subtle fault range of "39.9 Years old".
This is an extreme escape that trades precise errors for survival on the boundary between code and flesh.
