The Qi system is represented by "Lu Da Situ Za" and "Lu Da Situ Ding" of Lu State. It is an excellent work in the early Spring and Autumn Period. It has broad strokes and smooth strokes, and is a typical example of Western Zhou calligraphy. live. Among them, the structural treatment of the upper part of the character "Shou" has revealed the iconic characteristics of the Qi system calligraphy in the Eastern Zhou Dynasty.