A Voluptuous Beauty Becomes the Capital's Heir Apparent's Substitute White Moonlight

[Cold, austere powerhouse x fair-skinned beauty and money-loving princess|Both leads are each other’s first and only + sweet romance] After transmigrating into a melodramatic novel as a doomed cannon-fodder substitute, Su Yaoyao receives her assignment: spend 180 days playing the male lead’s substitute girlfriend and keeping his unstable emotions in check. Once the original story’s ideal returns to the country, take a 50-million retirement payout and disappear. The male lead, Gu Beichen, is the head of the Gu family in the capital, a god atop the white-collar pyramid. He seems cold, austere, and untouchable, but deep down he has a horrifying need for control and an obsessive streak. For the 50 million, Su Yaoyao sets herself a strict rule: only talk money, never catch feelings, and milk the male lead for all he’s worth! But on her very first day, she gets caught using his black card without permission. He pins her across his lap and gives her a thorough spanking, leaving her sobbing. System: “It’s no big deal. Just bear with it. Don’t panic.” She believes it. But the plot takes increasingly wild turns. On the seventh day, she splashes red wine in the face of a scheming rival in front of everyone. She expects to be scolded, but Gu Beichen hands her a handkerchief and asks, “Does your hand hurt?” On the fifteenth day, she gets drunk, rubs against the male lead’s suit trousers, and wheedles him for pocket money. The next morning, an extra ten million appears in her account, with the note: Buy candy. Su Yaoyao panics. “System, did he get the wrong script?” System coldly replies: “The destined ending cannot be changed. The male lead will only ever fall in love with the ideal heroine.” Until the rainy night when Song Qingwan returns to the country, right on schedule. Su Yaoyao happily packs her bags, ready to take the money and run, only for Gu Beichen, soaked through, to pin her firmly against the floor-to-ceiling window. His eyes bloodshot, the rough pad of his thumb dangerously caressing the nape of her neck, he speaks in a hoarse voice on the verge of losing control: “The substitute contract is over? Then let’s renew it for life.”