Island in the Sky [Apocalypse]

Zhou Yun is a traditional Chinese medicine doctor working as a labor dispatch staff member at Danlin City Second Hospital. After years of enduring exploitation by colleagues and low wages, he receives a shift swap request from Song Zhenhua, who hints at threatening his contract renewal. Instead of complying, Zhou Yun realizes he has been reborn back to the day before a global zombie apocalypse. In his previous life, he survived the collapse by wandering and fighting, eventually awakening dual water and wood abilities. Determined to change his fate, he resigns from the hospital, leaving behind unpaid wages and toxic workplace dynamics. Zhou Yun returns to his apartment in Yunding Mountain Estate, a high-rise community built at the foot of a mountain. Having survived the apocalypse before, he knows that civilization will soon collapse due to prion-induced zombie outbreaks and extreme weather changes. He immediately begins preparing for the disaster by liquidating his savings and selling his parents' gold bars. He purchases solar panels, wind turbines, rainwater collection systems, and reinforced glass for a rooftop greenhouse. He also stocks up on canned foods, seeds, livestock, and medical supplies. His goal is to create a self-sufficient fortress on the thirty-first floor, where he can survive the coming chaos with minimal exposure to zombies. During his preparations, Zhou Yun notices his neighbor across the hall, Guan Yuanfeng, a retired military officer who lost a leg in service. Guan Yuanfeng lives with his aging parents and younger brother, who treat him as a burden after he can no longer work. They have taken his villa and forced him into the relocation housing. Zhou Yun remembers that in his past life, Guan Yuanfeng became a powerful lightning ability user and a key ally in the apocalypse. Recognizing the strategic value of this relationship, Zhou Yun decides to build trust before the disaster strikes. Zhou Yun approaches Guan Yuanfeng with a proposal to rent his empty rooftop for growing medicinal herbs. He uses his medical credentials to establish credibility and offers to share meals as part of the arrangement. Guan Yuanfeng is initially cold and suspicious but gradually warms up to Zhou Yun's kindness and competence. Zhou Yun helps him with acupuncture to relieve phantom limb pain and provides nutritious meals that improve his health. Guan Yuanfeng notices Zhou Yun's extensive preparations, including large food stores and loan inquiries, but Zhou Yun deflects his questions. When Guan Yuanfeng discovers Zhou Yun's financial strain, he lends him two hundred thousand yuan, solidifying their bond. As the apocalypse approaches, Zhou Yun continues to fortify his home and cultivate plants that will gain special properties after the outbreak. He raises an electric eel, hoping to awaken a lightning ability similar to Guan Yuanfeng's. The story ends with Zhou Yun and Guan Yuanfeng establishing a routine of shared meals and mutual support, unaware that the world is about to change forever. Zhou Yun is ready to face the coming darkness with his preparations and new ally by his side.