Sixty-five kilometres north of Beijing, 30 kilometers west of the district of Huairou, the Huanghuacheng (Yellow Flowers) section of the Great Wall is completely unreconstructed. Here the genuinely old wall is semi-eroded but a few fragments remained almost intact.

       It's alleged that Lord Cai masterminded this section, applying meticulous quality control. Each inch of the masonry represented one labourer's whole day's work. When the Ministry of War got wind of the extravagance, Cai was beheaded omit for his efforts. Years later, a general judged Lord Cai's wall to be exemplary and he was posthumously rehabilitated. No matter how much truth is in this amazing story, strategically, this was an important stretch, guarding a branch way leading to the capital.

      From a little reservoir, Huanghuacheng Great  Wall climbs in both directions. The section to the east, across the dam, is comparatively easy to climb. The section to the west is in bad shape, accessible only to those risking to scramble up the steep slope. The best season to hike on Huanghuacheng Great Wall is in Spring while the wild wall is decorated with green leaves and blossomy flowers.