Reuniting With My Family Alongside My Doomed Bestie in a Fake Heiress Story

One moment, Chang Ruyi was discussing the latest tropes in stories about real and fake heiresses with her best friend. The next, she transmigrated into one as the real heiress. So here's the question: which story about real and fake heiresses did she transmigrate into, and is she playing the heroine or the villain?!!! * Whatever. For the money, she'll put up with it. After making thorough preparations, she arrived at the so-called family she came from, the Qu family. There she found a frail, delicate fake heiress; a wild younger brother in his rebellious phase, with a hair-trigger temper; an eldest brother who was a CEO and spent all his time at the office; and her “biological parents,” who said they were sorry but rushed to fuss over the fake heiress at the first cough. Sure enough, money's hard to earn and life is full of crap. * But things weren't nearly that simple. When someone framed Chang Ruyi, the fake heiress she'd increasingly found unsettling threw herself at her in tears. Suddenly, all the little things she'd ignored clicked into place. Chang Ruyi's eyes widened. Could this fake heiress actually be that hapless best friend of hers?! * On one hand, she had more money than she could spend in this lifetime. On the other, she had the best friend she'd been inseparable from in her previous life. Chang Ruyi decided to take back what she'd said about transmigrating into a book without a System being a waste, and enjoy high school with her best friend. Until disaster struck. Staring at her friend's lifeless body, Chang Ruyi's mind suddenly went blank. When she woke up again, she realized that the buzzing she'd heard before passing out hadn't been her imagination. It was the 【System】 she'd been hoping for, finally appearing. And her friend, who was supposed to be dead, stood by her bed and complained: “Chang Ruyi, get up already!”