Acu-moxa point chart, showing the
jinggong (Palace of Essence/Semen) point, from
Chuanwu lingji lu (Record of Sovereign Teachings), by Zhang Youheng, a treatise on acu-moxa in two volumes. This work survives only in a manuscript draft, completed in 1869 (8th year of the Tongzhi reign period of the Qing dynasty). It is illustrated with 84 charts, finely executed in colour.
The text states: The jinggong point is located below the 14th vertebra, 3 cun to either side of it (1 cun [Chinese/proportional inch] = c. 3 cm). Moxibusted with 7 moxa cones, it can be used to treat nocturnal emission.
