In the ancient town of Yongan, inside the century-old renowned mirror-casting shop Qingjiantang, the young master Lin Yanci is unwilling to let craftsmanship serve only the powerful, and is determined to create affordable three-inch small bronze mirrors that benefit the ordinary market folks. This move is opposed by the conservative faction of the clan and attracts the jealousy of his peer Zhang Sheng, who fabricates inferior mirrors to spread rumors, cuts off raw materials, and sets traps in every possible way. Facing heavy suppression and misunderstanding from rumors, Lin Yanci steadfastly upholds the artisan's original aspiration, remelts waste materials, publicly distinguishes truth from falsehood, and resolves the crisis with his craftsmanship and vision. In the end, his rival repents and wakes up, and everyone understands that a bronze mirror reflects eyebrows and eyes, while craftsmanship reflects human hearts even more; true inheritance is letting ordinary living beings also possess the right to be gently reflected.