Does Tian Sanqi's name come from the Book of Changes?

The name of Tian Sanqi does not come from the Book of Changes. Although The Book of Changes is a classic work of China in ancient times, it has a far-reaching influence on the culture of later generations. However, the theoretical basis of the three elements of heaven lies in the theory of dry branch and five elements, rather than the system perception theory in The Book of Changes. Therefore, we can't directly say that the statement of three unique days comes from the Book of Changes. However, it should be noted that the Book of Changes, as the foundation of metaphysics, may inspire or influence Tian Sanqi's thoughts and theories. The name Tianqi comes from ancient astronomy and Taoist magic in China. In ancient times, people attached great importance to the observation of astronomical phenomena. They found that Polaris always points to the north, while the sun and the moon show different positions and brightness. These observations have been compiled into an important astronomical term-three gases in the sky. Specifically, Panax notoginseng refers to three positions of ethylene, propylene and butyl, corresponding to three positions of ethylene, propylene and butyl respectively. E-wood is called "Sun Qi", C-fire is called "Moon Qi" and Ding Huo is called "Star Qi". These heavenly stems are also called "three wonders of heaven", corresponding to "three wonders of earth", which refer to three heavenly stems, A, E and G, representing the length of the tree, the mother of the earth and the essence of Jin Yang respectively. Solemnly declare: the answer is for reference only, please don't be blindly superstitious.