Dao Yin: 道銀
Archaeologists in Changsha, China recently excavated the tomb of Han Mawangdui, the first Han Emperor in 206 BCE. Among the artifacts were drawings on silk depicting physical postures held to promote "physical strength and a calm mind". The archaeologists also unearthed a "Book of Stretching". The postures were called Dao Yin.
The silk drawings are depicted at 3:01min.