The first illustration the child constructed for me, for I desired him to teach me how it was done, was a dragon horse, and when I asked him to explain it, he said that it represented the animal seen by Fu Hsi, the original ancestor of the Chinese people, emerging from the Meng river, bearing upon its back a map on which were fifty-five spots, representing the male and female principles of nature, and which the sage used to construct what are called the eight diagrams.