When sweet-scented osmanthus bloomed into the classroom in September, the transfer student Jiang Yuan became Lin Zijin's deskmate. The wind when he put the book picked up her liberal arts notes, and the pencil drew a question mark next to "Jian Jia Cang Cang" - this is the first stroke of their story.
He is a science genius who can solve electromagnetic problems in ten minutes, but he always leaves blanks when reciting ancient poems and articles; she can memorize the entire historical chronology, but is confused by his force analysis diagram. In the self-study class, next to the coordinate system drawn by the compass, there are dynasty scales marked by her; the orange candies sandwiched in the physics notes always have the English tenses she corrected printed on the wrappers. He said that liberal arts was roundabout, but he secretly memorized key words when she recited politics; she laughed at him for being a science geek, but she became red when he solved difficult problems.
When the coughing became louder, he just said he was catching a cold due to the change of season. The physics certificate was hidden in her schoolbag, and the red crosses were spreading on the liberal arts paper, but he still held on to teach her the mechanics questions. Until morning reading class, he fell down in the pile of notes, and the blood on the collar of his school uniform smudged the "May you pick more" she had just written.
In the sunshine of the hospital bed, she took Strawberry Cake to read a science magazine, then turned around and wiped away the blood he coughed on a tissue. "The liberal arts question... I understand it." His voice was as light as snow, "I don't have a chance to test it for you."
On the day of the funeral, she found the key points of liberal arts she had written in his physics notebook. The pencil words on the back have faint marks: "It turns out that 'Lovesickness' is more difficult to solve than the most difficult problem." The wind-rolled paper money is like a white butterfly, carrying unfinished formulas, falling towards the autumn without him.