What are the characteristics of the decoration of the ancient rule mirror in China?

Rule mirror because the main pattern area appears TLV-shaped format and named, the main pattern area is also often decorated with birds and animals, four gods. Outside the inscription band is often jagged, scrolling cloud pattern, rope pattern, etc. to form a concentric heavy circle organization. Typical works include the "Rule of Four Gods Mirror", the button area is decorated with four heart-shaped leaf pattern, including two square bars into the inner area, the inner area is decorated with twelve Chinese zodiac characters between twelve symmetrically arranged milky way. The main pattern area is decorated with symmetrical four groups of TLV rule pattern and the four gods of the blue dragon, white tiger, Zhuquan, Xuanwu, and the phoenix bird, beasts, and feathered men in the interstices are balanced arrangement. The inscription is written in a circle of seal script in positive seal script, "Shangfang makes a great deal without injury, the left dragon and the right tiger are not goats, the Zhuquiao and Xuanwu follow the yin and yang, the children and grandchildren are ready to reside in the center, and the two relatives are happy to be rich and prosperous, and the longevity of the gold and stone is like that of a monkey king". There are two serrated lines, one string pattern and one rope pattern on the outside of the band, forming a concentric heavy circle. Form a beautiful rhythmic fit pattern, extremely decorative.