Based on the solar calendar, Chinese sages created Chinese culture and Chinese medicine culture. Therefore, the solar calendar has the stipulation and infinite circulation that all the basic elements of Chinese medicine culture have. The two most fundamental seasons in the solar calendar are the winter solstice and the summer solstice, where yin and yang are abstracted. If you don’t know the solar calendar, the five elements of yin and yang are metaphysics; if you know the solar calendar, the five elements of yin and yang are the exquisite and precise laws of the sun. Based on two solar calendars, this book reinterprets the culture of traditional Chinese medicine, answers difficult questions in traditional Chinese medicine, and treats difficult and difficult diseases that cannot be cured by Western medicine.