Among the five solid vessels of the body, the heart takes a prominent place. It is the seat of the mind, and the foremost organ among the viscera. This right side view of a human torso offers a graphic representation of the heart’s central position. It depicts the ‘connectors’ (xi 系) by means of which the heart communicates with the four other solid vessels: lung, kidneys, liver, and spleen. Only one of the connectors, the ‘kidney connector’ (shen xi 腎系) is depicted fully: it attaches to the membrane that envelops the spinal fluid, connects the two kidneys, and goes downward from there. In the case of the ‘liver connector’ (gan xi 肝系) and the ‘spleen connector’ (pi xi 脾系), both of which penetrate the diaphragm, only the upper part is shown extending downward to the gastric cavity, where the liver (represented by a three petalled structure to the right of the torso) and the spleen (represented by a circular lobe to the left of the torso) are located. The diaphragm itself is represented as a white membrane below the heart (Man’ampō) / by two parallel lines that form a trefoil-shaped circle (Guang Wei Dafa).