What medical literature does the "Jiazi circulation theory" of human body come from?

Jiazi Cycle Theory, also known as Sixty Jiazi Cycle Theory, is a method of chronology, month, day and time in ancient China, which comes from Huangdi Neijing, Zhouyi Shentongqi and other documents. According to this theory, the operating law of Heaven can be summarized as "six or six sections", which mainly measures the changing law of time; The law of the metaplasia of the earth's Tao can be summarized as "Nine-Nine System Meeting", which mainly measures the law of spatial change; In the "June 6th Festival" theory, the key data measured by the above methods are named as the order of year, month, day and time, so as to be reused, which forms the Jiazi timing method.

Jiazi circulation theory is widely used in traditional Chinese medicine, yin-yang theory, numerology, Taoism and other fields.