One should understand the channels and network vessels

Translation by Lorraine Wilcox

Dòu Cái lived in the Southern Sòng dynasty. He was from Zhēndìng (in present-day Héběi province) but lived elsewhere as a military official. Dòu wrote one book, The Book of Bianquè’s Heart-Mind (기鵲懃書 Biănquè Xīn Shū), which has three main volumes plus an appendix of “Divine Formulas”.