Chinese philosophy originates in the Spring and Autumn period and Warring States period, during a period known as the "Hundred Schools of Thought", which was characterized by significant intellectual and cultural developments. Although much of Chinese philosophy begun in the Warring States period, elements of Chinese philosophy have existed for several thousand years. Some can be found in the I Ching (the Book of Changes), an ancient compendium of divination, which dates back to at least 672 BCE. It was during the Warring States era that what Sima Tan termed the major philosophical schools of China—Confucianism, Legalism, and Taoism—arose, along with philosophies that later fell into obscurity, like Agriculturalism, Mohism, Chinese Naturalism, and the Logicians. Even in modern society, Confucianism is still the creed of etiquette for Chinese society. Legitimacy of Chinese philosophy The debate over whether the thought of ancient Chinese masters should be called philosophy has been discussed since the introduction of this academic discipline into China. See Legitimacy of Chinese philosophy for details. Early Shang dynasty thought was based upon cycles. Like the 10 stems and 12 earthly branches. This notion stems from what the people of the Shang dynasty could observe around them: day and night cycled, the seasons progressed again and again, and even the moon waxed and waned until it waxed again. Thus, this notion, which remained relevant throughout Chinese history, reflects the order of nature. In juxtaposition, it also marks a fundamental distinction from western philosophy, in which the dominant view of time is a linear progression. During the Shang, Ancestor worship was present and universally recognized. When the Shang were overthrown by the Zhou a new political, religious and philosophical concept was introduced called the Mandate of Heaven,This mandate was said to be taken when rulers became unworthy of their position and provided a justification for Zhou rule it is said that the Duke of Zhou made the early solar terms by measuring with a gnomon that was added to make the complete solar terms.
Katrin Beyer, Francesco Vanin, Michele Godio, Andrea Penna