Zhang Beixing squanders his first life away, succumbing to illness in his prime. Fortune grants him a second chance—reborn as his younger self during university, armed with knowledge of his mortality and an iron will to transform. Gaunt and fragile, he commits to forging a body of steel through relentless training. When he posts a seemingly innocent question online—*How do I build an unbreakable constitution?*—fate intervenes in the form of the Persuasion System. The rules are deceptively simple: accept guidance from others, execute their counsel faithfully, and harvest Ability Points with each completed task. Grow stronger without limit. His mentors emerge from the digital void, each more audacious than the last. "Your pace is pathetic—strap fifty pounds to your frame and sprint ten kilometers daily until your legs forget fatigue." Another voice cuts through: "Vertical leap too feeble? Master the Left Foot Stepping on Right Foot technique. Follow this regiment and you'll touch the clouds." Zhang Beixing becomes a vessel for transformation, bending his resurrected body to impossible demands, chasing strength through the wisdom—and madness—of strangers online.