Through the passage of time, sandstone and terrazzo are interwoven to form "Old Alley Gravel Shadows". The sandstone is loose and naturally has a rustic charm. The terrazzo is made by mixing crushed stones and has a smooth surface with a distinct grain. The combination of the two not only combines the roughness of the sandstone and the beauty of the terrazzo, but also the mottled cracks resemble the engraved lines of time, creating a unique atmosphere that blends retro and modern, and is widely applicable to commercial spaces and home decoration.