I Found a Mermaid and Got Rich

Twenty years ago, the Yu family took home the wrong baby. Now they've finally found their real daughter in the countryside. After Yu Feiwan, who had usurped her place, is stripped of everything, they throw her out of the house. Penniless and almost sleeping under a bridge, Yu Feiwan finds a fish by the sea. More precisely, a severely injured male merfolk, unconscious. His silver hair was like fine snow-white satin, his porcelain-pale face handsome as if carved, and his skin finely textured. His jade-green tail shimmered with light, but his body was covered in wounds, and he was in a deep coma. Yu Feiwan took him home and carefully nursed him back to health. One day, the merfolk finally opened his ash-gray eyes. Yu Feiwan immediately dragged over a custom-made 1-by-1.5-meter seafood tank. "Buddy, cough up some pearls!" Merfolk: ? F-fill it up? Wouldn't I cry myself blind? - To make the fish cry and produce little pearls, Yu Feiwan played him melodramatic shows about car crashes, cancer, wicked mothers-in-law, and the upheaval of the three realms. The shows were tacky, but this fish had never seen the world. He was even tackier. The beautiful merfolk sat expressionlessly in the water-filled seafood tank, shedding pearls with a clatter like hailstones. - Yu Feiwan became rich overnight. The Yu family's real daughter put on a show of pity for her, saying she had no money and nowhere to live, and offering to give her a one-bedroom apartment. Yu Feiwan turned around and moved into a newly built luxury complex in a prime location, then began collecting rent from one building after another. The real daughter: ? The Yu family's fiance kept stringing along the real daughter while still harboring designs on Yu Feiwan. Worried that she'd look too shabby at a banquet, he offered to buy her jewelry. Yu Feiwan was carrying a sack of top-quality luminous pearls produced by her merfolk and opening the door of her Maybach, ready to go sell them. Hearing him, she looked at him in confusion. "Buddy, if you're sick, go get treatment." The Yu family's fiance: ? The Yu family landed a huge overseas contract and needed a shipping company to transport the goods. Then they discovered that the biggest, best-reviewed, shortest-distance, safest shipping company, with no pirates and dolphin and blue-whale shows along the way, was owned by Yu Feiwan, the woman they'd kicked out. The day before the voyage, a great white shark would slaughter the pirates along the route. Don't worry if there's a storm: dolphins and blue whales will escort you. Honest service, no scams! :) The whole Yu family: ??? - Loka was a god of the sea. One day, badly injured, unconscious, and amnesiac, he washed ashore and was taken home by a woman. Taking advantage of his confusion, that woman forced him to do many humiliating things. After recovering his memories, Loka abducted her and took her to his ocean kingdom. She had shamed and humiliated him. He would make her wish she were dead. That was what Loka thought as he coolly washed Yu Feiwan's underwear. - "Wish she were dead" refers to certain fade-to-black scenes. This time, I'm back, and I won't leave little pearls all over the bed! * Money-grubbing, lustful at first sight, vindictive, a ruthless exploitative boss in human form, fake-daughter heroine x initially weak and amnesiac, later invincible, forced to bow to circumstances, cute and adorably silly as well as wildly cool and domineering, merfolk sea-god hero * The hero coolly does laundry and washes underwear; he doesn't fight back when bullied, and loves clinging to his wife with a cold expression. Hero-focused readers, beware. * The blurb has been screenshotted. Premise: Hard work brings wealth.