She establishes double-entry bookkeeping and a contract system, standardizing business operations. Through multiple industrial chains, including fish sauce, silk, ceramics, iron smelting, and medicinal herbs, she amasses enormous wealth, earning thousands of taels in monthly profits. However, her fortune attracts the extortion of corrupt official Zhao Tongpan, forcing Lin Wanxing to train troops and build a fortified city for self-defense. In the end, she delivers evidence of Gao Song's corruption to the provincial governor, bringing Gao Song down and clearing the Lin family's wrongful conviction. The entire clan is pardoned. Lin Wanxing is appointed Director of Agricultural Colonization, officially becoming the island's administrator. The once-desolate island is transformed into a prosperous, free maritime home.