Zhu Zaijian time-travels to the Ming Dynasty, becoming the fifth son of the Jiajing Emperor—an infant who originally died before reaching one month of age. Facing the treacherous and unpredictable political landscape of the late Jiajing era, Zaijian knows a single misstep will lead to total ruin. He resolves to live as an unambitious, idle prince, planning to bide his time quietly and rebuild the shattered realm once he is dispatched to his fiefdom. To his surprise, right after submitting his petition to leave for his fief, he accidentally binds to the "National Fortune Immortality-Cultivation System." As long as he boosts the nation's fortune, he can continuously acquire cultivation resources and even upgrade his own aptitude and destiny. Zhu Zaijian is left speechless. Couldn't this damn system have arrived earlier? He was already packed and ready to become a feudal lord, and now it expects him to cultivate immortality? With no other choice, refusing to be a mortal waiting to die, he leverages the system to simultaneously cultivate immortality and actively participate in state affairs. Mastering alchemy, artifact crafting, talisman-making, and array formations, he unlocks the ultimate infrastructure-building mindset: to get rich, build roads first—awakening the traits of an infrastructure maniac in 15th-century Ming China ahead of schedule! Tatars raiding the border? He scoffs. Why bother recommending skilled generals when the Prince himself can don armor, take command, and sweep across the northern desert? Japanese pirates causing trouble? He scoffs again. Watch closely, Qi Jiguang, because this spear strike is going to be legendary! That day, a solitary spear fell from the skies, and a literal mushroom cloud erupted straight out of the islands of the East China Sea, leaving everyone utterly dumbfounded. While other contenders play politics in the fight for the succession, you're playing immortal cultivation?! Zhu Zaijian protests: "The succession? Ha, I never cared about it in the first place, I have zero interest in the throne! ...Wait, who put the imperial robe on me? You guys have really doomed me!" Meanwhile, the Jiajing Emperor is thoroughly amazed: "Training my physique to crane-like form means I no longer fear palace maids trying to strangle me! I seek the Dao with nothing left to say—my son is a Golden Immortal?! My good boy, I'll abdicate and hand the throne to you, how about you teach your old man how to cultivate immortality?!"