This medical book named Huangdi was not actually written by Huangdi. Legend has it that it was written in the Western Han Dynasty, and the author was not alone. It started from the period of the Yellow Emperor and spread for hundreds of thousands of years, spanning many periods, and collected the words of many authors, thus forming a medical work.

This book establishes the theory of Yin-Yang and Five Elements of TCM, pulse condition theory and so on. It is also from this book that our ancestors began the theory of harmony between yin and yang.

Combining human body and meteorology, this book gives the natural truth of long-term storage in spring, summer, autumn and winter, and encourages and guides people to pay attention to maintaining the yang of body growth in spring and summer and the yin of body storage in autumn and winter. That is to say, Yang is nourished in spring and summer, and Yin is nourished in autumn and winter.

This statement is in line with the laws of nature and the state of human growth. Anyway, it is appropriate for us in China to keep healthy.

Our ancestors not only gave us two fingernails, but also gave us a lot of spiritual wealth. Use it to stay healthy!

Raise yang in spring and summer.