Lin Xiaoman, a girl from the Department of Physics, is trapped in a strange time cage. Every time her heart stops, she returns to the cherry blossom tree at the opening ceremony. Transfer student Jiang Yiche can always catch her falling accurately, but he always disappears in the snowy dusk. When the plutonium-238 injection slipped out of his white coat and the electronic watch always stopped at 17:34, the time of his mother's car accident, Lin Xiaoman was shocked to realize that this boy who could predict all accidents using the Schrödinger equation was actually the "space-time patcher" created by his father using a particle collider.
The blue cesium isotope that pauses time flows in Jiang Yiche's blood, and the second button of her uniform seals her familiar pinewood scent, which was the remaining scent of him holding her out of the sea of fire when the laboratory exploded five years ago. As his fingertips began to quantize and the electronic watch had 108 cracks, Lin Xiaoman glimpsed the truth in the cracks in the four-dimensional space: the so-called transfer student was just a 72-hour reset that Jiang Yiche exchanged for the decay of his own particles, and every reunion they had under the cherry blossom rain was an afterimage of him being torn apart in parallel time and space.
When Lin Xiaoman cracked the space-time coordinates on the Möbius strip, Jiang Yiche turned into blue stardust and dissipated in the blizzard night. The last carbon atom in the button jumped out of Morse code on the mass spectrometer: "Every aurora you see when you look up is a birthday candle I lit for you in the antimatter universe." When the world was reset for the 109th time, the young man under the cherry blossom tree smiled and stretched out his hand, and the galaxy reflected in his pupils no longer had the scars she was familiar with.
Intention: The law of conservation of all time and space: when the observer chooses to forget, the loved one can exist completely)