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.
The child tossed the blocks off into a pile and then 
constructed a tortoise which he said was seen by Yü, the Chinese Noah, coming out of the Lo river, while he was draining off the floods. On its back was a design which he used as a pattern for the nine divisions of his empire.
These two incidents are referred to by Confucius, and are among the first learned by every Chinese child.
I looked through the book and noticed that many of the designs were for the amusement of the children, as well as to develop their ingenuity. In the two volumes of the T'ao he had only the outlines of the pictures which he readily constructed with the blocks. But he had with him also a small volume which was a key to the designs having lines indicating how each block was placed. This he had purchased for a few cash. Much of the interest of the book, however, attached to the puzzling character of the pictures.
There was one with a verse attached somewhat like the following: 
The old wife drew a chess-board
On the cover of a book,
While the child transformed a needle
Into a fishing-hook.
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