The text was mainly written during the early Zhou Dynasty (1046 BC-771 BC). Before Zhou Dynasty, there was Shang Dynasty (1600 BC - 1046 BC). Shang Dynasty's main cultural characteristics are its divination and character (old Chinese character). We cannot say which one was first, but it is supposed that characters were made from certain need while doing divination. During Shang Dynasty, divination was done by burning animal's bone or tortoise shell. Zhou Dynasty made Shang cease to exist, but it accepted Shang's culture. In early age of Zhou Dynasty, a new way of divination appeared which was put into writing. It was advanced form of Shang Dynasty's divination, and finally, it took place instead of Shang's divination.