This bronze mirror has a three-stringed knob. The ground patterns are fine cloud pattern and leaf pattern. The main pattern is six “山 (Shan, the Chinese character meaning ‘hill’)” pattern distributed evenly around the knob. The “山” pattern is a very popular bronze mirror decorative pattern during the Warring States Period, including patterns with three, four, five, or six “山” patterns. They are collectively called the mirrors with hill pattern. These mirrors are produced widely, north to the Yan State, south to the Chu State. Most of them are unearthed from the Chu Tomb. Among mirrors with hill pattern, patterns with four hill patterns are of the most common type. Less found ones are mirrors decorated with five, three, and six hill patterns. Such large mirror with six-hill pattern is very rare, and it is the most elite among the others.

The name of the mirror with six-hill pattern was first seen in the “Teng Hua Ting Jing Pu (Tenghua Pavilion Collection of Mirrors)” written by Liang Ting in the Qing Dynasty. The “山” patterns of the hill pattern are generally arranged as a left-handed or right-handed rotation. The left and right sides are enclosed into small triangles with acute angles. Although the hill pattern looks like the Chinese character “山” in today’s regular script, it is very different from the script meaning hill at that time.