The roofline cuts a jagged silhouette against the sky, a series of sawtooth peaks designed to capture the northern light. This architectural form serves a strict chemical purpose: the angled, north-facing windows admit a cool, diffuse illumination while rejecting direct solar heat that would scorch the delicate enzymes in the tea leaves. Built in the early 1950s, the factory embodies a specific moment when industrial pragmatism began to scale the ancient craft of tea making.

Inside, the building functions as a vertical machine. The layout utilizes gravity to move production downward, a cascade that once guided fresh leaves through stages of withering, rolling, and fermentation. The wooden floorboards, stained dark by decades of tea juices, still retain the "Keemun Aroma"—a complex profile often likened to dried plums, orchids, and toasted timber. This scent has permeated the brick and mortar, turning the structure itself into an olfactory archive.

The iron machinery stands silent now, but its scale reveals the ambition of the era. This facility marked the transition from the artisan’s basket to the conveyor belt, an effort to standardize a luxury good for export to London and New York. The ventilation systems and high clearances were not mere aesthetic choices; they were climate control mechanisms, essential for maintaining the precise humidity required for oxidation. The building stands as a functional monument, preserving the physical memory of a trade that shaped the region’s identity.