Two medical manuscripts dating from the Han Dynasty were found in Zhangjiashan grave number 247, in Jiangling, Hubei province, i, n 1983. These are the Maishu (脈書, Book of the Mai [vessels/channels]) and the Yinshu (引書, Pulling Book).
The Maishu was composed no later than the middle of the 2nd century BCE (there was a surge in medical development at the end of the 3rd century BCE). The Maishu consists of 6 texts, which were named by Donald Harper as follows:
- Ailment List
- Eleven Vessels
- Five Signs of Death
- Care of the Body
- Six Constituents
- Vessels and Vapour
The content is a mix of pre-medical healing techniques and the foundations for medical practice. The same connection between human physiology and natural structures is present here, especially in the Six Constituents.
The Yinshu contains a three-part text regarding macrobiotic techniques intended to pull qi (vapor) in and through the body. This is accomplished via gymnastic exercises, seasonal regimens, daily hygiene, and sexual practices.