The purpose is to commemorate past events that had value to that society.
The relief that found in ancient society usually depict several event that helps historians decipher the events that happened in the fast, such as the polices made by the kings, the military accomplishments of a certain prince or general, the gods that they worshipped, etc.
The Shang dynasty, also known as the Yin, was the second royal dynasty in the history of Ancient China.
Chinese society in that dynasty was complex and well developed.
The economy was based mainly on agriculture.
Craft activities and the manufacture of bronze artifacts were also common.
Supreme Law
The constitution is the supreme law of the land.