주공
Although "Kaogongji" does not explicitly identify this model with any historical city, it has been traditionally associated with Chengzhou, a city built by the Duke of Zhou soon after the Zhou conquest of the Shang. The “Proclamation at Luo,” a chapter of the "Book of Documents", describes how the Duke of Zhou traveled to Luo (near the site of present-day Luoyang) to establish a secondary capital for the new Zhou dynasty, further solidify the Zhou receipt of the Mandate of Heaven, and relocate the former subjects of the defeated Shang.