Situated in Gyeonggi-Do, Hwaseong Fortress attained UNESCO World Heritage status in 1997. This recognition was bestowed upon the fortress due to its architectural prowess, serving as a distinguished representation of the palace and military structures characteristic of the Jo-Seon Dynasty.

The corresponding ink adopts a dark gray hue, drawing inspiration from the aesthetically pleasing features of the surrounding landscape. Specifically, it mirrors the stone and brick fortress structures, along with the tiled roofs visible from the main gate of Hwaseong. Exhibiting a warm gray tone, this subtly yellowish dark gray captures the essence of the warm brick color observed in the stone walls and tiled roofs of Hwaseong's fortress, delicately encapsulating the beauty inherent in Hwaseong's architectural splendor.