**Heartbeat in the formula: A two-way secret love that started in a physics competition**
In the provincial physics competition examination room, Shen Zhao and Jiang Lin met for the first time because of an admission ticket. He is a genius boy who turned in his papers early, with a mysterious scar from his tiger's mouth; she is a transfer student who focuses on solving problems, and has a walnut pastry made by her grandma hidden in her schoolbag.
Fate connected them again - Shen Zhao transferred to another school and became Jiang Lin's back desk. He is recognized as the iceberg god of science in the attached middle school, an ace in physics competitions, dazzling but alienated. However, he was different with Shen Zhao: he took the initiative to chat, shared exclusive ideas for solving problems, and even "happened" to pick up the walnut pendant she dropped. In the cafeteria, he accurately commented on her grandma's special low-sugar walnut cake. He said, "You can tell me in advance if you want to bring it next time." There was an expectation that even he was not aware of.
They are "tied for first place" in the competition, and their names shine side by side on the honor roll. In the classroom, laboratory, and on the last bus back to the county town on Friday, formula calculations and physics problems are their code words. Jiang Lin's calm concern - the outline he handed over, the right reminders, and even "dropping in" on the last train to grandma's house - were like a carefully deduced puzzle. Shen Zhao keenly captured the fleeting waves in his amber eyes, the crescent scar on the tiger's mouth, the Planck constant tattoo under the cuffs, and the lingering smell of turpentine.
When the academic master's rigor meets the girl's delicacy, the graffiti hidden in the corners of the calculation paper, the deliberately long detours, and the carefully hidden book titles all become more heart-pounding secrets than the physics formulas. In the world of numbers and laws, two souls are quietly conducting an unknown experiment called "Heartbeat".
