Kazuo mature vinegar originated in the Yuan Dynasty, flourished in the Qing Dynasty, and is widely spread in the contemporary era. Kazuo, Chaoyang belongs to the hilly area of western Liaoning, where the water is clear, rich in minerals, and slightly sweet, suitable for brewing fermented products. For Harqin Left Wing Mongolian Autonomous County, Chaoyang City, vinegar is a flavor deeply imprinted on the locals' memories.