Hanok, the traditional residential architecture of the Joseon Dynasty, was built in harmony with nature and local climates. It features an ingenious structure where Ondol, a northern floor-heating system, coexists with Maru, a southern open-air cooling wooden floor. The gentle curve of the eaves is not merely aesthetic; it serves as a sophisticated sunlight regulator that blocks the scorching summer sun while drawing in the low-angled winter rays.