A new transfer student arrives in class—Xie Buci, the cold, aloof, and untouchable heiress of a wealthy family. More importantly, she’s extravagant with her money. A young miss like Xie Buci naturally needs a few lackeys to fawn over her, and Wen Yan is just the girl for the job. She showers Xie Buci with meticulous care, undeterred by the other's indifference. Then, by some twist of fate, Wen Yan gifts Xie Buci a slice of cake. Xie Buci falls silent for a long moment before asking her why. Staring at Xie Buci’s reddened eyes and recalling everything that had passed between them, Wen Yan suddenly realizes that this seemingly untouchable, cold-hearted young miss... is unexpectedly pure-hearted and easy to fool. A mischievous idea blooms in Wen Yan’s mind. Leaning in slowly, she leaves a kiss on Xie Buci’s lips—watching as those eyes widen in shock—and whispers: *"Because I like you."* **——** Xie Buci really is naïve. One kiss is enough to send her fleeing, flustered and red-faced. When Wen Yan pretends to avoid her out of "heartbreak," Xie Buci can’t resist seeking her out again. Once they start dating, Wen Yan finds life much easier. A little pitiful act is all it takes for Xie Buci to clear away all her troubles. *As long as Xie Buci stays rich and powerful,* Wen Yan thinks, *she can love her forever.* But before long, the Xie family goes bankrupt. Xie Buci’s father jumps from a building, and the once-proud heiress becomes a stray dog with nothing left to offer. Wen Yan walks away without looking back. When Xie Buci corners her and demands answers, Wen Yan only smiles faintly. *"Is it so hard to understand? Haven't you heard of *rational investment*?"* **——** Later, Xie Buci transfers schools. Wen Yan assumes that’s the end of it—until a lecture in her third year of college, when a familiar voice calls her name. *"Wen Yan."* She looks up and meets a pair of eyes she knows all too well. The girl she once *rationally invested in* stands on the podium. Pushing up her gold-rimmed glasses, Xie Buci asks, voice calm but gaze unreadable: *"Please explain—your definition and *experience* with rational investing."*