Heze Caozhou Ancient City, a thousand-year-time capsule nestled by the Yellow River, was the site of the Caozhou Prefecture Office during the Ming and Qing dynasties. The complete city walls and street layouts are like a three-dimensional historical manuscript. Bricks and gray tiles of Ming and Qing buildings are arranged in the terrain, and the Maotou Wall and carved window lattices gleam with a warm luster in the sunlight, as if you could hear the echoes of merchants’ clappers and scholars’ readings from the past.