Lin Fan, who failed the college entrance examination, was deeply troubled by the medical expenses of his mother's serious illness. During the dog days of summer, he was sweating and digging in the fields, but unexpectedly dug out an ancient jade pendant that was warm to the touch, and rare phosphorus vitriol with a faint blue luster.
The moment his fingertips touched the jade pendant, the dying seedlings turned green and the parched earth seeped water. What shocked him even more was that the jade pendant contained the inheritance of ancient martial arts. A shadowy figure taught him boxing skills at night, allowing him to gradually gain the power to protect himself after being bullied by the village bully. By using the jade pendant to promote life and phosphorus vitriol to transform crops, Lin Fan grew melons and fruits that were as sweet as the mountains. Not only did he pay for his mother's medical expenses, but his dilapidated home also improved.
Supporting teacher Su Qingyue helped him manage his account books and fend off village bullies. Lin Wanxi, the daughter of a medicinal merchant who was rescued when he went into the mountains to search for phosphorus vitriol, helped him with sales and knowledge of medicinal materials. Zhao Qing, a female bodyguard who was rescued when fighting against treasure hunters, always accompanied him to protect him.
As his fame grew, the value of phosphorus alum and the secret of the jade pendant attracted the attention of greedy businessmen, martial arts families and even immortal cultivators. While Lin Fan studied martial arts hard and developed his industry, he protected his family and home with the help of three beauties. From a failed student who was bullied, he transformed into a legend who stirred up the rural economy and shocked the martial arts circle. He finally found happiness and responsibility in protecting and growing up.