This image zooms in on the anatomical structure of the diaphragm (ge mo 隔膜) and the amorphous ‘sea of qi ’ (qi hai 氣海) held to be located above it. The diaphragm extends ‘like a thin sheet of paper’ connected to the spine, ribcase, and the belly, which separates the abdominal cavity from the hypochondrium. It is graphically represented as a pale, flesh-coloured surface (Man’ampō) / a circle that is formed by two parallel lines (Guang Wei Dafa). The ‘sea of qi ’, conceived of as the ‘origin of qi and the basis of life’, is graphically represented as a circle directly above the diaphragm. The diaphragm forms an ‘impenetrable screen’, which covers the abdominal area and prevents turbid qi from ascending to the lung. The ‘impenetrable screen’ has to be traversed by qi, food and body fluids, however. This is graphically represented by the vertical vessels, the ‘connectors’, the ‘mouth of the stomach’ (cardia) and the oesophagus, all of which form passageways that penetrate the diaphragm. If these passageways are obstructed, qi and body fluids cannot circulate. This leads to a blockage between the upper and lower parts of the body, which causes sickness.