The true master takes a CPhO problem and changes one parameter (e.g., "replace the frictionless surface with a viscous medium"). Then solve again. This creates a new problem, building the creativity needed for future contests.
The air in the small, cramped study room was thick with the scent of old paper and the hum of a flickering fluorescent bulb. For Liang, this wasn’t just a room; it was a launchpad. On his scarred wooden desk lay the "Holy Grail" of his high school career: a weathered, 300-page preparation guide, its edges curled from years of obsessive study. The Legend of the PDF