Textual Research on Wu Yanzhi's Cultivation of Immortality

People in the world are cultivating immortals, looking for secret books, seizing spiritual veins, and competing for opportunities. Wu Yanzhi only relied on a pile of old books to cultivate immortality. Wu Yanzhi, a young Qi practitioner from the Qingyun Sect, does not believe in magical powers that he can get out of thin air. He read the "Huangdi Neijing" and realized a set of fallacies that you can win by standing still. He used "Compendium of Materia Medica" to cook sweet potatoes and "Zhuangzi" to stew fish. While others worked hard to practice swordsmanship and compete, he squatted in the spiritual pond to catch koi to pay off his debts; while others rushed to the secret place to hunt for treasures, he traveled far away with a bundle of old books on his back, looking for ancient iron gates in various places. Iron gates are scattered all over the world, and the dark gold glimmer circulates all year round. Hidden behind the door are eternal events, layered worlds, and a recurring message: Doors are not meant to be opened, but meant to be seen. Jiang Xiaoyu walked with him, Shen Yigui investigated the traces, and Li Shoucheng pretended to have unspoken things. There was no sky-shattering fight, only observation, textual research, and deduction, and we slowly reached the edge of the world. Using ancient books as a ladder, Yu Yanhuo asked.