[Alternate Ancient Setting] [Female-Led Exile] [Coastal Foraging and Farming] [Salt Production and Trade] [Family Exoneration] Xu Heng, who grew up by the sea, transmigrates into the eldest daughter of a disgraced official and is exiled with her entire clan to a desolate island. Faced with food shortages, poisonous tides, and a salt monopoly, she relies on her knowledge of marine life, dried fish, and salt kilns to help her family survive, step by step. She also establishes a new rule: women's labor is recorded, and they keep what they earn. [While foraging on the shore, she finds the belongings of a salt worker, leading to a missing shipment of government salt.] [While repairing a ruined kiln, she discovers military provisions hidden in a salt warehouse.] [After rescuing a government ship in danger, she receives legal salt permits in return.] When an old ledger that could clear the Xu family's name finally comes to light, Xu Heng realizes that someone is waiting for the entire clan to die on the island...