money by melting down bronze implements. As the money in circulation was
increased in this way, the value of the currency fell. Then it paid to
turn coin into metal implements. This once more reduced the money in
circulation and increased the value of the remaining coinage. Thus
through the whole course of Chinese history the scarcity of metal and
insufficiency of production of metal continually produced extensive
fluctuations of the stocks and the value of metal, amounting virtually
to an economic law in China. Consequently metal implements were never
universally in use, and vessels were always of earthenware, with the
further result of the early invention of porcelain. Porcelain vessels
have many of the qualities of metal ones, but are cheaper.

The earthenware vessels used in this period are in many cases already
very near to porcelain: there was a pottery of a brilliant white,
lacking only the glaze which would have made it into porcelain. Patterns
were stamped on the surface, often resembling the patterns on bronze
articles. This ware was used only for formal, ceremonial purposes. For
daily use there was also a perfectly simple grey pottery.

Silk was already in use at this time. The invention of sericulture must
therefore have dated from very ancient times in China. It undoubtedly
originated in the south of China, and at first not only the threads
spun by the silkworm but those made by other caterpillars were also
used. The remains of silk fabrics that have been found show already an
advanced weaving technique. In addition to silk, various plant fibres,
such as hemp, were in use. Woollen fabrics do not seem to have been yet
used.

The Shang were agriculturists, but their implements were still rather
primitive. There was no real plough yet; hoes and hoe-like implements