Modern Line (1934): Peking, Yenching University. Shen Qingxian, a genius from the Department of Mathematics, firmly believed that everything can be defined by formulas. Until he found that his eyes could not help but follow Zhou Huaijin from the Department of History. He encrypted this "unsolvable" emotion into an original mathematical conjecture, and the manuscript was sealed together with his secret in the library on the eve of the war.
Modern Line (2024): Same campus. Lin Su, a doctor of mathematics, is fascinated by the "Shen's Conjecture" that has not been solved for a century. The beauty of its logic and hidden emotional direction made him pursue the answer at all costs. He discovered that the key to cracking the problem lay with Lu Xun, an alienated teaching assistant in the History Department - a young man whose research direction was student history in the Republic of China and whose appearance was very similar to Zhou Huaijin in the file photo.
Lin Su's fanatical search for proof and Lu Xun's quiet exploration were fatefully intertwined because of this question. When Lin Su finally solved the final geometric model and found that the coordinates pointed to the lakeside pavilion a hundred years ago, Lu Xun also opened the dusty diary fragments. On it was Zhou Huaijin's handwriting: "I have spent my life interpreting history, but I can't understand the unfinished theorem in his eyes when he looked at me."
A mathematical proof that has been silent for hundreds of years, and an unspoken admiration from another life. Two souls deduced alone in their respective eras, just to arrive at the same answer about "love".
Purpose: This story explores whether human beings' most rigorous logical thinking and most subtle emotions can achieve harmony and unity in a higher dimension through the interweaving of mathematics and history, rationality and sensibility. It celebrates the immortal inheritance of knowledge and ideas - those unspeakable deep feelings and outstanding wisdom that will eventually travel through time and resonate in a soul in the future, completing a mutual confirmation and arrival that spans a hundred years.