Beside his hand lay a thick pile of used scratch paper, covered with derived formulas and symbols. The places visible on the shelf were filled with physics books like "The Large Scale Structure of Space-Time," "The Foundation of General Relativity," and "Quantum Field Theory."
Her eyes were suddenly drawn to a model. Just as she was about to touch it, a cold boyish voice came to her ear: "Don't move."
Helian Yu quickly withdrew her hand and awkwardly found something to say: "What is this?"
"It's a space-time curvature demonstration model."
Helian Yu frowned: "Xixi, I remember you used to like drawing. I thought you'd become an artist. At the very least, you would study medicine. When did you become interested in physics?"
"Have you forgotten? You threw away my drawing board." The boy's voice was cold, with a hint of sarcasm.
Helian Yu looked embarrassed, recalling how Xixi was obsessed with drawing as a child, almost fanatically so. She had done it to save him.
