This is a Jade GUI Tablet (gui圭) in Late Neolithic to early Shang dynasty (2nd millennium BCE). The GUI is one of the important objects for a ceremony and also a symbol of a person's status. Jade as a stone age heritage, occupies an important position in Chinese culture. The cultural connotation of ancient jade in China not only includes the design of art, grinding technology, written records, but also includes etiquette, religion, economic value and decorative features. The ancient jade's political value is reflected in the ancient jade artifacts of social hierarchy and carried ancient people's morality. In ancient times, jade symbolizes the high character of ethics and morals. In the traditional thinking, jade physical and chemical properties
