In her senior year of high school, the reckless energetic girl Su Xia, like a bubbling orange-flavored soda, accidentally broke into the cold, mint-like lonely world of Xue Shen Jiang Yu. She chased his back and plunged into the sea of questions filled with functions and formulas, just to get closer to the out-of-reach young man. She didn't know that in a corner that she couldn't see, the young man had already written down the only unsolvable problem about her on the calculation paper. This is a pure love story about secret love, pursuit, and two-way running. It is a commemorative poem written for everyone who has loved hard in their youth.