As early as the Xia, Shang and Zhou Dynasties (about the end of the 22nd century BC-256 BC), medicinal liquor and decoction appeared in China. The Book of Songs in the Western Zhou Dynasty (about 1 1 century-77 BC1years ago) is the earliest book with drugs in existing literature in China. Neijing is the earliest extant classic of Chinese medicine theory, which puts forward the theories of "cold is hot, heat is cold", "five flavors enter" and "five internal organs are bitter and want to tonify diarrhea", which lays the foundation for the basic theory of Chinese medicine.
The earliest extant monographs on health care include Ling Jianzi by Xun, Record of Mending Heaven and Prolonging Life by Hongjing, Xuandao Method of Raising Nest Source by Sui Dynasty, Tian Factor Health Care Book by Sima Tang, Health Care Doubt by Jianwu (Qi Zhenzi) and Tao. There are also seven books, including Health Collection, Health Compilation, Gough Health Record, Ji Guo Health Book, Fei Yu Health Book, Zheng Jingyu Four Seasons Health Theory and Yin Mu Four Qi Health Theory.